661405920

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{461}}^1$

素因数の和:554

約数の個数: 288

約数和(自身を含む): 2468654496

約数和(自身を除く): 1807248576

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 61, 70, 80, 84, 96, 98, 105, 112, 120, 122, 140, 147, 160, 168, 183, 196, 210, 224, 240, 244, 245, 280, 294, 305, 336, 366, 392, 420, 427, 461, 480, 488, 490, 560, 588, 610, 672, 732, 735, 784, 840, 854, 915, 922, 976, 980, 1120, 1176, 1220, 1281, 1383, 1464, 1470, 1568, 1680, 1708, 1830, 1844, 1952, 1960, 2135, 2305, 2352, 2440, 2562, 2766, 2928, 2940, 2989, 3227, 3360, 3416, 3660, 3688, 3920, 4270, 4610, 4704, 4880, 5124, 5532, 5856, 5880, 5978, 6405, 6454, 6832, 6915, 7320, 7376, 7840, 8540, 8967, 9220, 9681, 9760, 10248, 11064, 11760, 11956, 12810, 12908, 13664, 13830, 14640, 14752, 14945, 16135, 17080, 17934, 18440, 19362, 20496, 22128, 22589, 23520, 23912, 25620, 25816, 27660, 28121, 29280, 29890, 32270, 34160, 35868, 36880, 38724, 40992, 44256, 44835, 45178, 47824, 48405, 51240, 51632, 55320, 56242, 59780, 64540, 67767, 68320, 71736, 73760, 77448, 84363, 89670, 90356, 95648, 96810, 102480, 103264, 110640, 112484, 112945, 119560, 129080, 135534, 140605, 143472, 154896, 168726, 179340, 180712, 193620, 196847, 204960, 221280, 224968, 225890, 239120, 258160, 271068, 281210, 286944, 309792, 337452, 338835, 358680, 361424, 387240, 393694, 421815, 449936, 451780, 478240, 516320, 542136, 562420, 590541, 674904, 677670, 717360, 722848, 774480, 787388, 843630, 899872, 903560, 984235, 1084272, 1124840, 1181082, 1349808, 1355340, 1377929, 1434720, 1548960, 1574776, 1687260, 1807120, 1968470, 2168544, 2249680, 2362164, 2699616, 2710680, 2755858, 2952705, 3149552, 3374520, 3614240, 3936940, 4133787, 4499360, 4724328, 5421360, 5511716, 5905410, 6299104, 6749040, 6889645, 7873880, 8267574, 9448656, 10842720, 11023432, 11810820, 13498080, 13779290, 15747760, 16535148, 18897312, 20668935, 22046864, 23621640, 27558580, 31495520, 33070296, 41337870, 44093728, 47243280, 55117160, 66140592, 82675740, 94486560, 110234320, 132281184, 165351480, 220468640, 330702960, 661405920]

約数ペア:

[(1, 661405920), (2, 330702960), (3, 220468640), (4, 165351480), (5, 132281184), (6, 110234320), (7, 94486560), (8, 82675740), (10, 66140592), (12, 55117160), (14, 47243280), (15, 44093728), (16, 41337870), (20, 33070296), (21, 31495520), (24, 27558580), (28, 23621640), (30, 22046864), (32, 20668935), (35, 18897312), (40, 16535148), (42, 15747760), (48, 13779290), (49, 13498080), (56, 11810820), (60, 11023432), (61, 10842720), (70, 9448656), (80, 8267574), (84, 7873880), (96, 6889645), (98, 6749040), (105, 6299104), (112, 5905410), (120, 5511716), (122, 5421360), (140, 4724328), (147, 4499360), (160, 4133787), (168, 3936940), (183, 3614240), (196, 3374520), (210, 3149552), (224, 2952705), (240, 2755858), (244, 2710680), (245, 2699616), (280, 2362164), (294, 2249680), (305, 2168544), (336, 1968470), (366, 1807120), (392, 1687260), (420, 1574776), (427, 1548960), (461, 1434720), (480, 1377929), (488, 1355340), (490, 1349808), (560, 1181082), (588, 1124840), (610, 1084272), (672, 984235), (732, 903560), (735, 899872), (784, 843630), (840, 787388), (854, 774480), (915, 722848), (922, 717360), (976, 677670), (980, 674904), (1120, 590541), (1176, 562420), (1220, 542136), (1281, 516320), (1383, 478240), (1464, 451780), (1470, 449936), (1568, 421815), (1680, 393694), (1708, 387240), (1830, 361424), (1844, 358680), (1952, 338835), (1960, 337452), (2135, 309792), (2305, 286944), (2352, 281210), (2440, 271068), (2562, 258160), (2766, 239120), (2928, 225890), (2940, 224968), (2989, 221280), (3227, 204960), (3360, 196847), (3416, 193620), (3660, 180712), (3688, 179340), (3920, 168726), (4270, 154896), (4610, 143472), (4704, 140605), (4880, 135534), (5124, 129080), (5532, 119560), (5856, 112945), (5880, 112484), (5978, 110640), (6405, 103264), (6454, 102480), (6832, 96810), (6915, 95648), (7320, 90356), (7376, 89670), (7840, 84363), (8540, 77448), (8967, 73760), (9220, 71736), (9681, 68320), (9760, 67767), (10248, 64540), (11064, 59780), (11760, 56242), (11956, 55320), (12810, 51632), (12908, 51240), (13664, 48405), (13830, 47824), (14640, 45178), (14752, 44835), (14945, 44256), (16135, 40992), (17080, 38724), (17934, 36880), (18440, 35868), (19362, 34160), (20496, 32270), (22128, 29890), (22589, 29280), (23520, 28121), (23912, 27660), (25620, 25816)]