858222620

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{217823}}^1$

素因数の和:218029

約数の個数: 24

約数和(自身を含む): 1811424384

約数和(自身を除く): 953201764

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 217823, 435646, 871292, 1089115, 2178230, 4356460, 42911131, 85822262, 171644524, 214555655, 429111310, 858222620]

約数ペア:

[(1, 858222620), (2, 429111310), (4, 214555655), (5, 171644524), (10, 85822262), (20, 42911131), (197, 4356460), (394, 2178230), (788, 1089115), (985, 871292), (1970, 435646), (3940, 217823)]