257614960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{953}}^1$

素因数の和:1106

約数の個数: 80

約数和(自身を含む): 624602880

約数和(自身を除く): 366987920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 109, 124, 155, 218, 248, 310, 436, 496, 545, 620, 872, 953, 1090, 1240, 1744, 1906, 2180, 2480, 3379, 3812, 4360, 4765, 6758, 7624, 8720, 9530, 13516, 15248, 16895, 19060, 27032, 29543, 33790, 38120, 54064, 59086, 67580, 76240, 103877, 118172, 135160, 147715, 207754, 236344, 270320, 295430, 415508, 472688, 519385, 590860, 831016, 1038770, 1181720, 1662032, 2077540, 2363440, 3220187, 4155080, 6440374, 8310160, 12880748, 16100935, 25761496, 32201870, 51522992, 64403740, 128807480, 257614960]

約数ペア:

[(1, 257614960), (2, 128807480), (4, 64403740), (5, 51522992), (8, 32201870), (10, 25761496), (16, 16100935), (20, 12880748), (31, 8310160), (40, 6440374), (62, 4155080), (80, 3220187), (109, 2363440), (124, 2077540), (155, 1662032), (218, 1181720), (248, 1038770), (310, 831016), (436, 590860), (496, 519385), (545, 472688), (620, 415508), (872, 295430), (953, 270320), (1090, 236344), (1240, 207754), (1744, 147715), (1906, 135160), (2180, 118172), (2480, 103877), (3379, 76240), (3812, 67580), (4360, 59086), (4765, 54064), (6758, 38120), (7624, 33790), (8720, 29543), (9530, 27032), (13516, 19060), (15248, 16895)]