18071920

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1013}}^1$

素因数の和:1249

約数の個数: 40

約数和(自身を含む): 42247296

約数和(自身を除く): 24175376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1013, 1115, 1784, 2026, 2230, 3568, 4052, 4460, 5065, 8104, 8920, 10130, 16208, 17840, 20260, 40520, 81040, 225899, 451798, 903596, 1129495, 1807192, 2258990, 3614384, 4517980, 9035960, 18071920]

約数ペア:

[(1, 18071920), (2, 9035960), (4, 4517980), (5, 3614384), (8, 2258990), (10, 1807192), (16, 1129495), (20, 903596), (40, 451798), (80, 225899), (223, 81040), (446, 40520), (892, 20260), (1013, 17840), (1115, 16208), (1784, 10130), (2026, 8920), (2230, 8104), (3568, 5065), (4052, 4460)]