21531038

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1\times {\mathrm{887}}^1$

素因数の和:1171

約数の個数: 16

約数和(自身を含む): 33086880

約数和(自身を除く): 11555842

約数列:

[1, 2, 53, 106, 229, 458, 887, 1774, 12137, 24274, 47011, 94022, 203123, 406246, 10765519, 21531038]

約数ペア:

[(1, 21531038), (2, 10765519), (53, 406246), (106, 203123), (229, 94022), (458, 47011), (887, 24274), (1774, 12137)]