31978360

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:137

約数の個数: 128

約数和(自身を含む): 82736640

約数和(自身を除く): 50758280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 37, 40, 41, 62, 68, 74, 82, 85, 124, 136, 148, 155, 164, 170, 185, 205, 248, 296, 310, 328, 340, 370, 410, 527, 620, 629, 680, 697, 740, 820, 1054, 1147, 1240, 1258, 1271, 1394, 1480, 1517, 1640, 2108, 2294, 2516, 2542, 2635, 2788, 3034, 3145, 3485, 4216, 4588, 5032, 5084, 5270, 5576, 5735, 6068, 6290, 6355, 6970, 7585, 9176, 10168, 10540, 11470, 12136, 12580, 12710, 13940, 15170, 19499, 21080, 21607, 22940, 25160, 25420, 25789, 27880, 30340, 38998, 43214, 45880, 47027, 50840, 51578, 60680, 77996, 86428, 94054, 97495, 103156, 108035, 128945, 155992, 172856, 188108, 194990, 206312, 216070, 235135, 257890, 376216, 389980, 432140, 470270, 515780, 779960, 799459, 864280, 940540, 1031560, 1598918, 1881080, 3197836, 3997295, 6395672, 7994590, 15989180, 31978360]

約数ペア:

[(1, 31978360), (2, 15989180), (4, 7994590), (5, 6395672), (8, 3997295), (10, 3197836), (17, 1881080), (20, 1598918), (31, 1031560), (34, 940540), (37, 864280), (40, 799459), (41, 779960), (62, 515780), (68, 470270), (74, 432140), (82, 389980), (85, 376216), (124, 257890), (136, 235135), (148, 216070), (155, 206312), (164, 194990), (170, 188108), (185, 172856), (205, 155992), (248, 128945), (296, 108035), (310, 103156), (328, 97495), (340, 94054), (370, 86428), (410, 77996), (527, 60680), (620, 51578), (629, 50840), (680, 47027), (697, 45880), (740, 43214), (820, 38998), (1054, 30340), (1147, 27880), (1240, 25789), (1258, 25420), (1271, 25160), (1394, 22940), (1480, 21607), (1517, 21080), (1640, 19499), (2108, 15170), (2294, 13940), (2516, 12710), (2542, 12580), (2635, 12136), (2788, 11470), (3034, 10540), (3145, 10168), (3485, 9176), (4216, 7585), (4588, 6970), (5032, 6355), (5084, 6290), (5270, 6068), (5576, 5735)]