20915854

素因数分解:

$2^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1\times {\mathrm{1129}}^1$

素因数の和:1347

約数の個数: 16

約数和(自身を含む): 32137200

約数和(自身を除く): 11221346

約数列:

[1, 2, 59, 118, 157, 314, 1129, 2258, 9263, 18526, 66611, 133222, 177253, 354506, 10457927, 20915854]

約数ペア:

[(1, 20915854), (2, 10457927), (59, 354506), (118, 177253), (157, 133222), (314, 66611), (1129, 18526), (2258, 9263)]