81791640

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:407

約数の個数: 256

約数和(自身を含む): 322560000

約数和(自身を除く): 240768360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 31, 35, 36, 40, 42, 45, 54, 56, 60, 62, 63, 70, 72, 84, 90, 93, 105, 108, 120, 124, 126, 135, 140, 155, 168, 180, 186, 189, 210, 216, 217, 248, 252, 270, 279, 280, 310, 315, 349, 360, 372, 378, 420, 434, 465, 504, 540, 558, 620, 630, 651, 698, 744, 756, 837, 840, 868, 930, 945, 1047, 1080, 1085, 1116, 1240, 1260, 1302, 1395, 1396, 1512, 1674, 1736, 1745, 1860, 1890, 1953, 2094, 2170, 2232, 2443, 2520, 2604, 2790, 2792, 3141, 3255, 3348, 3490, 3720, 3780, 3906, 4185, 4188, 4340, 4886, 5208, 5235, 5580, 5859, 6282, 6510, 6696, 6980, 7329, 7560, 7812, 8370, 8376, 8680, 9423, 9765, 9772, 10470, 10819, 11160, 11718, 12215, 12564, 13020, 13960, 14658, 15624, 15705, 16740, 18846, 19530, 19544, 20940, 21638, 21987, 23436, 24430, 25128, 26040, 29295, 29316, 31410, 32457, 33480, 36645, 37692, 39060, 41880, 43276, 43974, 46872, 47115, 48860, 54095, 58590, 58632, 62820, 64914, 65961, 73290, 75384, 75733, 78120, 86552, 87948, 94230, 97371, 97720, 108190, 109935, 117180, 125640, 129828, 131922, 146580, 151466, 162285, 175896, 188460, 194742, 216380, 219870, 227199, 234360, 259656, 263844, 292113, 293160, 302932, 324570, 329805, 376920, 378665, 389484, 432760, 439740, 454398, 486855, 527688, 584226, 605864, 649140, 659610, 681597, 757330, 778968, 879480, 908796, 973710, 1135995, 1168452, 1298280, 1319220, 1363194, 1460565, 1514660, 1817592, 1947420, 2044791, 2271990, 2336904, 2638440, 2726388, 2921130, 3029320, 3407985, 3894840, 4089582, 4543980, 5452776, 5842260, 6815970, 8179164, 9087960, 10223955, 11684520, 13631940, 16358328, 20447910, 27263880, 40895820, 81791640]

約数ペア:

[(1, 81791640), (2, 40895820), (3, 27263880), (4, 20447910), (5, 16358328), (6, 13631940), (7, 11684520), (8, 10223955), (9, 9087960), (10, 8179164), (12, 6815970), (14, 5842260), (15, 5452776), (18, 4543980), (20, 4089582), (21, 3894840), (24, 3407985), (27, 3029320), (28, 2921130), (30, 2726388), (31, 2638440), (35, 2336904), (36, 2271990), (40, 2044791), (42, 1947420), (45, 1817592), (54, 1514660), (56, 1460565), (60, 1363194), (62, 1319220), (63, 1298280), (70, 1168452), (72, 1135995), (84, 973710), (90, 908796), (93, 879480), (105, 778968), (108, 757330), (120, 681597), (124, 659610), (126, 649140), (135, 605864), (140, 584226), (155, 527688), (168, 486855), (180, 454398), (186, 439740), (189, 432760), (210, 389484), (216, 378665), (217, 376920), (248, 329805), (252, 324570), (270, 302932), (279, 293160), (280, 292113), (310, 263844), (315, 259656), (349, 234360), (360, 227199), (372, 219870), (378, 216380), (420, 194742), (434, 188460), (465, 175896), (504, 162285), (540, 151466), (558, 146580), (620, 131922), (630, 129828), (651, 125640), (698, 117180), (744, 109935), (756, 108190), (837, 97720), (840, 97371), (868, 94230), (930, 87948), (945, 86552), (1047, 78120), (1080, 75733), (1085, 75384), (1116, 73290), (1240, 65961), (1260, 64914), (1302, 62820), (1395, 58632), (1396, 58590), (1512, 54095), (1674, 48860), (1736, 47115), (1745, 46872), (1860, 43974), (1890, 43276), (1953, 41880), (2094, 39060), (2170, 37692), (2232, 36645), (2443, 33480), (2520, 32457), (2604, 31410), (2790, 29316), (2792, 29295), (3141, 26040), (3255, 25128), (3348, 24430), (3490, 23436), (3720, 21987), (3780, 21638), (3906, 20940), (4185, 19544), (4188, 19530), (4340, 18846), (4886, 16740), (5208, 15705), (5235, 15624), (5580, 14658), (5859, 13960), (6282, 13020), (6510, 12564), (6696, 12215), (6980, 11718), (7329, 11160), (7560, 10819), (7812, 10470), (8370, 9772), (8376, 9765), (8680, 9423)]