21020422

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{1997}}^1$

素因数の和:2295

約数の個数: 16

約数和(自身を含む): 33326640

約数和(自身を除く): 12306218

約数列:

[1, 2, 19, 38, 277, 554, 1997, 3994, 5263, 10526, 37943, 75886, 553169, 1106338, 10510211, 21020422]

約数ペア:

[(1, 21020422), (2, 10510211), (19, 1106338), (38, 553169), (277, 75886), (554, 37943), (1997, 10526), (3994, 5263)]