21525640

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1499}}^1$

素因数の和:1869

約数の個数: 32

約数和(自身を含む): 48600000

約数和(自身を除く): 27074360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1499, 1795, 2872, 2998, 3590, 5996, 7180, 7495, 11992, 14360, 14990, 29980, 59960, 538141, 1076282, 2152564, 2690705, 4305128, 5381410, 10762820, 21525640]

約数ペア:

[(1, 21525640), (2, 10762820), (4, 5381410), (5, 4305128), (8, 2690705), (10, 2152564), (20, 1076282), (40, 538141), (359, 59960), (718, 29980), (1436, 14990), (1499, 14360), (1795, 11992), (2872, 7495), (2998, 7180), (3590, 5996)]