28506640

素因数分解:

$2^4\times 5^1\times {\mathrm{356333}}^1$

素因数の和:356346

約数の個数: 20

約数和(自身を含む): 66278124

約数和(自身を除く): 37771484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 356333, 712666, 1425332, 1781665, 2850664, 3563330, 5701328, 7126660, 14253320, 28506640]

約数ペア:

[(1, 28506640), (2, 14253320), (4, 7126660), (5, 5701328), (8, 3563330), (10, 2850664), (16, 1781665), (20, 1425332), (40, 712666), (80, 356333)]