21985060

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1699}}^1$

素因数の和:2355

約数の個数: 24

約数和(自身を含む): 46267200

約数和(自身を除く): 24282140

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1699, 2588, 3235, 3398, 6470, 6796, 8495, 12940, 16990, 33980, 1099253, 2198506, 4397012, 5496265, 10992530, 21985060]

約数ペア:

[(1, 21985060), (2, 10992530), (4, 5496265), (5, 4397012), (10, 2198506), (20, 1099253), (647, 33980), (1294, 16990), (1699, 12940), (2588, 8495), (3235, 6796), (3398, 6470)]