251012872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{20521}}^1$

素因数の和:20677

約数の個数: 32

約数和(自身を含む): 517154400

約数和(自身を除く): 266141528

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 139, 278, 556, 1112, 1529, 3058, 6116, 12232, 20521, 41042, 82084, 164168, 225731, 451462, 902924, 1805848, 2852419, 5704838, 11409676, 22819352, 31376609, 62753218, 125506436, 251012872]

約数ペア:

[(1, 251012872), (2, 125506436), (4, 62753218), (8, 31376609), (11, 22819352), (22, 11409676), (44, 5704838), (88, 2852419), (139, 1805848), (278, 902924), (556, 451462), (1112, 225731), (1529, 164168), (3058, 82084), (6116, 41042), (12232, 20521)]