21324709

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1\times {\mathrm{251}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 3714011

約数列:

[1, 7, 53, 229, 251, 371, 1603, 1757, 12137, 13303, 57479, 84959, 93121, 402353, 3046387, 21324709]

約数ペア:

[(1, 21324709), (7, 3046387), (53, 402353), (229, 93121), (251, 84959), (371, 57479), (1603, 13303), (1757, 12137)]