20667009

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{3989}}^1$

素因数の和:4160

約数の個数: 16

約数和(自身を含む): 30260160

約数和(自身を除く): 9593151

約数列:

[1, 3, 11, 33, 157, 471, 1727, 3989, 5181, 11967, 43879, 131637, 626273, 1878819, 6889003, 20667009]

約数ペア:

[(1, 20667009), (3, 6889003), (11, 1878819), (33, 626273), (157, 131637), (471, 43879), (1727, 11967), (3989, 5181)]