1280147240

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{121687}}^1$

素因数の和:121961

約数の個数: 32

約数和(自身を含む): 2891306880

約数和(自身を除く): 1611159640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 121687, 243374, 486748, 608435, 973496, 1216870, 2433740, 4867480, 32003681, 64007362, 128014724, 160018405, 256029448, 320036810, 640073620, 1280147240]

約数ペア:

[(1, 1280147240), (2, 640073620), (4, 320036810), (5, 256029448), (8, 160018405), (10, 128014724), (20, 64007362), (40, 32003681), (263, 4867480), (526, 2433740), (1052, 1216870), (1315, 973496), (2104, 608435), (2630, 486748), (5260, 243374), (10520, 121687)]