81499360

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1$

素因数の和:153

約数の個数: 144

約数和(自身を含む): 217755216

約数和(自身を除く): 136255856

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 83, 85, 95, 136, 152, 160, 166, 170, 190, 272, 304, 323, 332, 340, 361, 380, 415, 544, 608, 646, 664, 680, 722, 760, 830, 1292, 1328, 1360, 1411, 1444, 1520, 1577, 1615, 1660, 1805, 2584, 2656, 2720, 2822, 2888, 3040, 3154, 3230, 3320, 3610, 5168, 5644, 5776, 6137, 6308, 6460, 6640, 7055, 7220, 7885, 10336, 11288, 11552, 12274, 12616, 12920, 13280, 14110, 14440, 15770, 22576, 24548, 25232, 25840, 26809, 28220, 28880, 29963, 30685, 31540, 45152, 49096, 50464, 51680, 53618, 56440, 57760, 59926, 61370, 63080, 98192, 107236, 112880, 119852, 122740, 126160, 134045, 149815, 196384, 214472, 225760, 239704, 245480, 252320, 268090, 299630, 428944, 479408, 490960, 509371, 536180, 599260, 857888, 958816, 981920, 1018742, 1072360, 1198520, 2037484, 2144720, 2397040, 2546855, 4074968, 4289440, 4794080, 5093710, 8149936, 10187420, 16299872, 20374840, 40749680, 81499360]

約数ペア:

[(1, 81499360), (2, 40749680), (4, 20374840), (5, 16299872), (8, 10187420), (10, 8149936), (16, 5093710), (17, 4794080), (19, 4289440), (20, 4074968), (32, 2546855), (34, 2397040), (38, 2144720), (40, 2037484), (68, 1198520), (76, 1072360), (80, 1018742), (83, 981920), (85, 958816), (95, 857888), (136, 599260), (152, 536180), (160, 509371), (166, 490960), (170, 479408), (190, 428944), (272, 299630), (304, 268090), (323, 252320), (332, 245480), (340, 239704), (361, 225760), (380, 214472), (415, 196384), (544, 149815), (608, 134045), (646, 126160), (664, 122740), (680, 119852), (722, 112880), (760, 107236), (830, 98192), (1292, 63080), (1328, 61370), (1360, 59926), (1411, 57760), (1444, 56440), (1520, 53618), (1577, 51680), (1615, 50464), (1660, 49096), (1805, 45152), (2584, 31540), (2656, 30685), (2720, 29963), (2822, 28880), (2888, 28220), (3040, 26809), (3154, 25840), (3230, 25232), (3320, 24548), (3610, 22576), (5168, 15770), (5644, 14440), (5776, 14110), (6137, 13280), (6308, 12920), (6460, 12616), (6640, 12274), (7055, 11552), (7220, 11288), (7885, 10336)]