20986860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3209}}^1$

素因数の和:3330

約数の個数: 48

約数和(自身を含む): 59320800

約数和(自身を除く): 38333940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 109, 218, 327, 436, 545, 654, 1090, 1308, 1635, 2180, 3209, 3270, 6418, 6540, 9627, 12836, 16045, 19254, 32090, 38508, 48135, 64180, 96270, 192540, 349781, 699562, 1049343, 1399124, 1748905, 2098686, 3497810, 4197372, 5246715, 6995620, 10493430, 20986860]

約数ペア:

[(1, 20986860), (2, 10493430), (3, 6995620), (4, 5246715), (5, 4197372), (6, 3497810), (10, 2098686), (12, 1748905), (15, 1399124), (20, 1049343), (30, 699562), (60, 349781), (109, 192540), (218, 96270), (327, 64180), (436, 48135), (545, 38508), (654, 32090), (1090, 19254), (1308, 16045), (1635, 12836), (2180, 9627), (3209, 6540), (3270, 6418)]