678528640

素因数分解:

$2^7\times 5^1\times {\mathrm{1060201}}^1$

素因数の和:1060220

約数の個数: 32

約数和(自身を含む): 1622109060

約数和(自身を除く): 943580420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1060201, 2120402, 4240804, 5301005, 8481608, 10602010, 16963216, 21204020, 33926432, 42408040, 67852864, 84816080, 135705728, 169632160, 339264320, 678528640]

約数ペア:

[(1, 678528640), (2, 339264320), (4, 169632160), (5, 135705728), (8, 84816080), (10, 67852864), (16, 42408040), (20, 33926432), (32, 21204020), (40, 16963216), (64, 10602010), (80, 8481608), (128, 5301005), (160, 4240804), (320, 2120402), (640, 1060201)]