78896890

素因数分解:

$2^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 144648000

約数和(自身を除く): 65751110

約数列:

[1, 2, 5, 10, 97, 163, 194, 326, 485, 499, 815, 970, 998, 1630, 2495, 4990, 15811, 31622, 48403, 79055, 81337, 96806, 158110, 162674, 242015, 406685, 484030, 813370, 7889689, 15779378, 39448445, 78896890]

約数ペア:

[(1, 78896890), (2, 39448445), (5, 15779378), (10, 7889689), (97, 813370), (163, 484030), (194, 406685), (326, 242015), (485, 162674), (499, 158110), (815, 96806), (970, 81337), (998, 79055), (1630, 48403), (2495, 31622), (4990, 15811)]