21082550

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{1459}}^1$

素因数の和:1505

約数の個数: 36

約数和(自身を含む): 41684460

約数和(自身を除く): 20601910

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 289, 425, 578, 850, 1445, 1459, 2890, 2918, 7225, 7295, 14450, 14590, 24803, 36475, 49606, 72950, 124015, 248030, 421651, 620075, 843302, 1240150, 2108255, 4216510, 10541275, 21082550]

約数ペア:

[(1, 21082550), (2, 10541275), (5, 4216510), (10, 2108255), (17, 1240150), (25, 843302), (34, 620075), (50, 421651), (85, 248030), (170, 124015), (289, 72950), (425, 49606), (578, 36475), (850, 24803), (1445, 14590), (1459, 14450), (2890, 7295), (2918, 7225)]