261602120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:435

約数の個数: 128

約数和(自身を含む): 680127840

約数和(自身を除く): 418525720

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 101, 104, 130, 136, 170, 202, 221, 260, 293, 340, 404, 442, 505, 520, 586, 680, 808, 884, 1010, 1105, 1172, 1313, 1465, 1717, 1768, 2020, 2210, 2344, 2626, 2930, 3434, 3809, 4040, 4420, 4981, 5252, 5860, 6565, 6868, 7618, 8585, 8840, 9962, 10504, 11720, 13130, 13736, 15236, 17170, 19045, 19924, 22321, 24905, 26260, 29593, 30472, 34340, 38090, 39848, 44642, 49810, 52520, 59186, 64753, 68680, 76180, 89284, 99620, 111605, 118372, 129506, 147965, 152360, 178568, 199240, 223210, 236744, 259012, 295930, 323765, 384709, 446420, 503081, 518024, 591860, 647530, 769418, 892840, 1006162, 1183720, 1295060, 1538836, 1923545, 2012324, 2515405, 2590120, 3077672, 3847090, 4024648, 5030810, 6540053, 7694180, 10061620, 13080106, 15388360, 20123240, 26160212, 32700265, 52320424, 65400530, 130801060, 261602120]

約数ペア:

[(1, 261602120), (2, 130801060), (4, 65400530), (5, 52320424), (8, 32700265), (10, 26160212), (13, 20123240), (17, 15388360), (20, 13080106), (26, 10061620), (34, 7694180), (40, 6540053), (52, 5030810), (65, 4024648), (68, 3847090), (85, 3077672), (101, 2590120), (104, 2515405), (130, 2012324), (136, 1923545), (170, 1538836), (202, 1295060), (221, 1183720), (260, 1006162), (293, 892840), (340, 769418), (404, 647530), (442, 591860), (505, 518024), (520, 503081), (586, 446420), (680, 384709), (808, 323765), (884, 295930), (1010, 259012), (1105, 236744), (1172, 223210), (1313, 199240), (1465, 178568), (1717, 152360), (1768, 147965), (2020, 129506), (2210, 118372), (2344, 111605), (2626, 99620), (2930, 89284), (3434, 76180), (3809, 68680), (4040, 64753), (4420, 59186), (4981, 52520), (5252, 49810), (5860, 44642), (6565, 39848), (6868, 38090), (7618, 34340), (8585, 30472), (8840, 29593), (9962, 26260), (10504, 24905), (11720, 22321), (13130, 19924), (13736, 19045), (15236, 17170)]