21130305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3797}}^1$

素因数の和:3865

約数の個数: 32

約数和(自身を含む): 39377664

約数和(自身を除く): 18247359

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3797, 5565, 11391, 18985, 26579, 56955, 79737, 132895, 201241, 398685, 603723, 1006205, 1408687, 3018615, 4226061, 7043435, 21130305]

約数ペア:

[(1, 21130305), (3, 7043435), (5, 4226061), (7, 3018615), (15, 1408687), (21, 1006205), (35, 603723), (53, 398685), (105, 201241), (159, 132895), (265, 79737), (371, 56955), (795, 26579), (1113, 18985), (1855, 11391), (3797, 5565)]