81898320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:134

約数の個数: 240

約数和(自身を含む): 307658880

約数和(自身を除く): 225760560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 35, 40, 41, 42, 48, 56, 58, 60, 70, 80, 82, 84, 87, 105, 112, 116, 120, 123, 140, 145, 164, 168, 174, 203, 205, 210, 232, 240, 246, 280, 287, 290, 328, 336, 348, 406, 410, 420, 435, 464, 492, 560, 574, 580, 609, 615, 656, 696, 812, 820, 840, 861, 870, 984, 1015, 1148, 1160, 1189, 1218, 1230, 1392, 1435, 1624, 1640, 1680, 1681, 1722, 1740, 1968, 2030, 2296, 2320, 2378, 2436, 2460, 2870, 3045, 3248, 3280, 3362, 3444, 3480, 3567, 4060, 4305, 4592, 4756, 4872, 4920, 5043, 5740, 5945, 6090, 6724, 6888, 6960, 7134, 8120, 8323, 8405, 8610, 9512, 9744, 9840, 10086, 11480, 11767, 11890, 12180, 13448, 13776, 14268, 16240, 16646, 16810, 17220, 17835, 19024, 20172, 22960, 23534, 23780, 24360, 24969, 25215, 26896, 28536, 33292, 33620, 34440, 35301, 35670, 40344, 41615, 47068, 47560, 48720, 48749, 49938, 50430, 57072, 58835, 66584, 67240, 68880, 70602, 71340, 80688, 83230, 94136, 95120, 97498, 99876, 100860, 117670, 124845, 133168, 134480, 141204, 142680, 146247, 166460, 176505, 188272, 194996, 199752, 201720, 235340, 243745, 249690, 282408, 285360, 292494, 332920, 341243, 353010, 389992, 399504, 403440, 470680, 487490, 499380, 564816, 584988, 665840, 682486, 706020, 731235, 779984, 941360, 974980, 998760, 1023729, 1169976, 1364972, 1412040, 1462470, 1706215, 1949960, 1997520, 2047458, 2339952, 2729944, 2824080, 2924940, 3412430, 3899920, 4094916, 5118645, 5459888, 5849880, 6824860, 8189832, 10237290, 11699760, 13649720, 16379664, 20474580, 27299440, 40949160, 81898320]

約数ペア:

[(1, 81898320), (2, 40949160), (3, 27299440), (4, 20474580), (5, 16379664), (6, 13649720), (7, 11699760), (8, 10237290), (10, 8189832), (12, 6824860), (14, 5849880), (15, 5459888), (16, 5118645), (20, 4094916), (21, 3899920), (24, 3412430), (28, 2924940), (29, 2824080), (30, 2729944), (35, 2339952), (40, 2047458), (41, 1997520), (42, 1949960), (48, 1706215), (56, 1462470), (58, 1412040), (60, 1364972), (70, 1169976), (80, 1023729), (82, 998760), (84, 974980), (87, 941360), (105, 779984), (112, 731235), (116, 706020), (120, 682486), (123, 665840), (140, 584988), (145, 564816), (164, 499380), (168, 487490), (174, 470680), (203, 403440), (205, 399504), (210, 389992), (232, 353010), (240, 341243), (246, 332920), (280, 292494), (287, 285360), (290, 282408), (328, 249690), (336, 243745), (348, 235340), (406, 201720), (410, 199752), (420, 194996), (435, 188272), (464, 176505), (492, 166460), (560, 146247), (574, 142680), (580, 141204), (609, 134480), (615, 133168), (656, 124845), (696, 117670), (812, 100860), (820, 99876), (840, 97498), (861, 95120), (870, 94136), (984, 83230), (1015, 80688), (1148, 71340), (1160, 70602), (1189, 68880), (1218, 67240), (1230, 66584), (1392, 58835), (1435, 57072), (1624, 50430), (1640, 49938), (1680, 48749), (1681, 48720), (1722, 47560), (1740, 47068), (1968, 41615), (2030, 40344), (2296, 35670), (2320, 35301), (2378, 34440), (2436, 33620), (2460, 33292), (2870, 28536), (3045, 26896), (3248, 25215), (3280, 24969), (3362, 24360), (3444, 23780), (3480, 23534), (3567, 22960), (4060, 20172), (4305, 19024), (4592, 17835), (4756, 17220), (4872, 16810), (4920, 16646), (5043, 16240), (5740, 14268), (5945, 13776), (6090, 13448), (6724, 12180), (6888, 11890), (6960, 11767), (7134, 11480), (8120, 10086), (8323, 9840), (8405, 9744), (8610, 9512)]