1285880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 3214080

約数和(自身を除く): 1928200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 61, 62, 68, 85, 122, 124, 136, 155, 170, 244, 248, 305, 310, 340, 488, 527, 610, 620, 680, 1037, 1054, 1220, 1240, 1891, 2074, 2108, 2440, 2635, 3782, 4148, 4216, 5185, 5270, 7564, 8296, 9455, 10370, 10540, 15128, 18910, 20740, 21080, 32147, 37820, 41480, 64294, 75640, 128588, 160735, 257176, 321470, 642940, 1285880]

約数ペア:

[(1, 1285880), (2, 642940), (4, 321470), (5, 257176), (8, 160735), (10, 128588), (17, 75640), (20, 64294), (31, 41480), (34, 37820), (40, 32147), (61, 21080), (62, 20740), (68, 18910), (85, 15128), (122, 10540), (124, 10370), (136, 9455), (155, 8296), (170, 7564), (244, 5270), (248, 5185), (305, 4216), (310, 4148), (340, 3782), (488, 2635), (527, 2440), (610, 2108), (620, 2074), (680, 1891), (1037, 1240), (1054, 1220)]