21395216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70379}}^1$

素因数の和:70406

約数の個数: 20

約数和(自身を含む): 43635600

約数和(自身を除く): 22240384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70379, 140758, 281516, 563032, 1126064, 1337201, 2674402, 5348804, 10697608, 21395216]

約数ペア:

[(1, 21395216), (2, 10697608), (4, 5348804), (8, 2674402), (16, 1337201), (19, 1126064), (38, 563032), (76, 281516), (152, 140758), (304, 70379)]