21149090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1409}}^1$

素因数の和:1514

約数の個数: 32

約数和(自身を含む): 40608000

約数和(自身を除く): 19458910

約数列:

[1, 2, 5, 10, 19, 38, 79, 95, 158, 190, 395, 790, 1409, 1501, 2818, 3002, 7045, 7505, 14090, 15010, 26771, 53542, 111311, 133855, 222622, 267710, 556555, 1113110, 2114909, 4229818, 10574545, 21149090]

約数ペア:

[(1, 21149090), (2, 10574545), (5, 4229818), (10, 2114909), (19, 1113110), (38, 556555), (79, 267710), (95, 222622), (158, 133855), (190, 111311), (395, 53542), (790, 26771), (1409, 15010), (1501, 14090), (2818, 7505), (3002, 7045)]