289032020

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{68491}}^1$

素因数の和:68711

約数の個数: 24

約数和(自身を含む): 609852768

約数和(自身を除く): 320820748

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 68491, 136982, 273964, 342455, 684910, 1369820, 14451601, 28903202, 57806404, 72258005, 144516010, 289032020]

約数ペア:

[(1, 289032020), (2, 144516010), (4, 72258005), (5, 57806404), (10, 28903202), (20, 14451601), (211, 1369820), (422, 684910), (844, 342455), (1055, 273964), (2110, 136982), (4220, 68491)]