20811974

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{3259}}^1$

素因数の和:3395

約数の個数: 16

約数和(自身を含む): 32547840

約数和(自身を除く): 11735866

約数列:

[1, 2, 31, 62, 103, 206, 3193, 3259, 6386, 6518, 101029, 202058, 335677, 671354, 10405987, 20811974]

約数ペア:

[(1, 20811974), (2, 10405987), (31, 671354), (62, 335677), (103, 202058), (206, 101029), (3193, 6518), (3259, 6386)]