20972273

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:632

約数の個数: 16

約数和(自身を含む): 24630144

約数和(自身を除く): 3657871

約数列:

[1, 7, 67, 97, 461, 469, 679, 3227, 6499, 30887, 44717, 45493, 216209, 313019, 2996039, 20972273]

約数ペア:

[(1, 20972273), (7, 2996039), (67, 313019), (97, 216209), (461, 45493), (469, 44717), (679, 30887), (3227, 6499)]