19758040

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2341}}^1$

素因数の和:2563

約数の個数: 32

約数和(自身を含む): 44685360

約数和(自身を除く): 24927320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2341, 4220, 4682, 8440, 9364, 11705, 18728, 23410, 46820, 93640, 493951, 987902, 1975804, 2469755, 3951608, 4939510, 9879020, 19758040]

約数ペア:

[(1, 19758040), (2, 9879020), (4, 4939510), (5, 3951608), (8, 2469755), (10, 1975804), (20, 987902), (40, 493951), (211, 93640), (422, 46820), (844, 23410), (1055, 18728), (1688, 11705), (2110, 9364), (2341, 8440), (4220, 4682)]