21257054116

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1586821}}^1$

素因数の和:1587039

約数の個数: 24

約数和(自身を含む): 39588035256

約数和(自身を除く): 18330981140

約数列:

[1, 2, 4, 17, 34, 68, 197, 394, 788, 3349, 6698, 13396, 1586821, 3173642, 6347284, 26975957, 53951914, 107903828, 312603737, 625207474, 1250414948, 5314263529, 10628527058, 21257054116]

約数ペア:

[(1, 21257054116), (2, 10628527058), (4, 5314263529), (17, 1250414948), (34, 625207474), (68, 312603737), (197, 107903828), (394, 53951914), (788, 26975957), (3349, 6347284), (6698, 3173642), (13396, 1586821)]