55556920

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8521}}^1$

素因数の和:8695

約数の個数: 32

約数和(自身を含む): 125784720

約数和(自身を除く): 70227800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 8521, 17042, 34084, 42605, 68168, 85210, 170420, 340840, 1388923, 2777846, 5555692, 6944615, 11111384, 13889230, 27778460, 55556920]

約数ペア:

[(1, 55556920), (2, 27778460), (4, 13889230), (5, 11111384), (8, 6944615), (10, 5555692), (20, 2777846), (40, 1388923), (163, 340840), (326, 170420), (652, 85210), (815, 68168), (1304, 42605), (1630, 34084), (3260, 17042), (6520, 8521)]