20721877

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 2606123

約数列:

[1, 11, 47, 149, 269, 517, 1639, 2959, 7003, 12643, 40081, 77033, 139073, 440891, 1883807, 20721877]

約数ペア:

[(1, 20721877), (11, 1883807), (47, 440891), (149, 139073), (269, 77033), (517, 40081), (1639, 12643), (2959, 7003)]