80916400

素因数分解:

$2^4\times 5^2\times {\mathrm{202291}}^1$

素因数の和:202309

約数の個数: 30

約数和(自身を含む): 194402612

約数和(自身を除く): 113486212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202291, 404582, 809164, 1011455, 1618328, 2022910, 3236656, 4045820, 5057275, 8091640, 10114550, 16183280, 20229100, 40458200, 80916400]

約数ペア:

[(1, 80916400), (2, 40458200), (4, 20229100), (5, 16183280), (8, 10114550), (10, 8091640), (16, 5057275), (20, 4045820), (25, 3236656), (40, 2022910), (50, 1618328), (80, 1011455), (100, 809164), (200, 404582), (400, 202291)]