80071120

素因数分解:

$2^4\times 5^1\times {\mathrm{1000889}}^1$

素因数の和:1000902

約数の個数: 20

約数和(自身を含む): 186165540

約数和(自身を除く): 106094420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1000889, 2001778, 4003556, 5004445, 8007112, 10008890, 16014224, 20017780, 40035560, 80071120]

約数ペア:

[(1, 80071120), (2, 40035560), (4, 20017780), (5, 16014224), (8, 10008890), (10, 8007112), (16, 5004445), (20, 4003556), (40, 2001778), (80, 1000889)]