71911120

素因数分解:

$2^4\times 5^1\times {\mathrm{898889}}^1$

素因数の和:898902

約数の個数: 20

約数和(自身を含む): 167193540

約数和(自身を除く): 95282420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 898889, 1797778, 3595556, 4494445, 7191112, 8988890, 14382224, 17977780, 35955560, 71911120]

約数ペア:

[(1, 71911120), (2, 35955560), (4, 17977780), (5, 14382224), (8, 8988890), (10, 7191112), (16, 4494445), (20, 3595556), (40, 1797778), (80, 898889)]