68720800

素因数分解:

$2^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:231

約数の個数: 144

約数和(自身を含む): 184488192

約数和(自身を除く): 115767392

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 31, 32, 34, 40, 50, 62, 68, 80, 85, 100, 124, 136, 155, 160, 163, 170, 200, 248, 272, 310, 326, 340, 400, 425, 496, 527, 544, 620, 652, 680, 775, 800, 815, 850, 992, 1054, 1240, 1304, 1360, 1550, 1630, 1700, 2108, 2480, 2608, 2635, 2720, 2771, 3100, 3260, 3400, 4075, 4216, 4960, 5053, 5216, 5270, 5542, 6200, 6520, 6800, 8150, 8432, 10106, 10540, 11084, 12400, 13040, 13175, 13600, 13855, 16300, 16864, 20212, 21080, 22168, 24800, 25265, 26080, 26350, 27710, 32600, 40424, 42160, 44336, 50530, 52700, 55420, 65200, 69275, 80848, 84320, 85901, 88672, 101060, 105400, 110840, 126325, 130400, 138550, 161696, 171802, 202120, 210800, 221680, 252650, 277100, 343604, 404240, 421600, 429505, 443360, 505300, 554200, 687208, 808480, 859010, 1010600, 1108400, 1374416, 1718020, 2021200, 2147525, 2216800, 2748832, 3436040, 4042400, 4295050, 6872080, 8590100, 13744160, 17180200, 34360400, 68720800]

約数ペア:

[(1, 68720800), (2, 34360400), (4, 17180200), (5, 13744160), (8, 8590100), (10, 6872080), (16, 4295050), (17, 4042400), (20, 3436040), (25, 2748832), (31, 2216800), (32, 2147525), (34, 2021200), (40, 1718020), (50, 1374416), (62, 1108400), (68, 1010600), (80, 859010), (85, 808480), (100, 687208), (124, 554200), (136, 505300), (155, 443360), (160, 429505), (163, 421600), (170, 404240), (200, 343604), (248, 277100), (272, 252650), (310, 221680), (326, 210800), (340, 202120), (400, 171802), (425, 161696), (496, 138550), (527, 130400), (544, 126325), (620, 110840), (652, 105400), (680, 101060), (775, 88672), (800, 85901), (815, 84320), (850, 80848), (992, 69275), (1054, 65200), (1240, 55420), (1304, 52700), (1360, 50530), (1550, 44336), (1630, 42160), (1700, 40424), (2108, 32600), (2480, 27710), (2608, 26350), (2635, 26080), (2720, 25265), (2771, 24800), (3100, 22168), (3260, 21080), (3400, 20212), (4075, 16864), (4216, 16300), (4960, 13855), (5053, 13600), (5216, 13175), (5270, 13040), (5542, 12400), (6200, 11084), (6520, 10540), (6800, 10106), (8150, 8432)]