21713965

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3671}}^1$

素因数の和:3709

約数の個数: 24

約数和(自身を含む): 32254848

約数和(自身を除く): 10540883

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 845, 1183, 3671, 5915, 18355, 25697, 47723, 128485, 238615, 334061, 620399, 1670305, 3101995, 4342793, 21713965]

約数ペア:

[(1, 21713965), (5, 4342793), (7, 3101995), (13, 1670305), (35, 620399), (65, 334061), (91, 238615), (169, 128485), (455, 47723), (845, 25697), (1183, 18355), (3671, 5915)]