21979923

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 34755072

約数和(自身を除く): 12775149

約数列:

[1, 3, 7, 21, 43, 101, 129, 241, 301, 303, 707, 723, 903, 1687, 2121, 4343, 5061, 10363, 13029, 24341, 30401, 31089, 72541, 73023, 91203, 170387, 217623, 511161, 1046663, 3139989, 7326641, 21979923]

約数ペア:

[(1, 21979923), (3, 7326641), (7, 3139989), (21, 1046663), (43, 511161), (101, 217623), (129, 170387), (241, 91203), (301, 73023), (303, 72541), (707, 31089), (723, 30401), (903, 24341), (1687, 13029), (2121, 10363), (4343, 5061)]