21068908

素因数分解:

$2^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1163}}^1$

素因数の和:1821

約数の個数: 24

約数和(自身を含む): 42239232

約数和(自身を除く): 21170324

約数列:

[1, 2, 4, 7, 14, 28, 647, 1163, 1294, 2326, 2588, 4529, 4652, 8141, 9058, 16282, 18116, 32564, 752461, 1504922, 3009844, 5267227, 10534454, 21068908]

約数ペア:

[(1, 21068908), (2, 10534454), (4, 5267227), (7, 3009844), (14, 1504922), (28, 752461), (647, 32564), (1163, 18116), (1294, 16282), (2326, 9058), (2588, 8141), (4529, 4652)]