20655901

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 25769016

約数和(自身を除く): 5113115

約数列:

[1, 7, 17, 49, 119, 137, 181, 833, 959, 1267, 2329, 3077, 6713, 8869, 16303, 21539, 24797, 114121, 150773, 173579, 421549, 1215053, 2950843, 20655901]

約数ペア:

[(1, 20655901), (7, 2950843), (17, 1215053), (49, 421549), (119, 173579), (137, 150773), (181, 114121), (833, 24797), (959, 21539), (1267, 16303), (2329, 8869), (3077, 6713)]