31351120

素因数分解:

$2^4\times 5^1\times {\mathrm{391889}}^1$

素因数の和:391902

約数の個数: 20

約数和(自身を含む): 72891540

約数和(自身を除く): 41540420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391889, 783778, 1567556, 1959445, 3135112, 3918890, 6270224, 7837780, 15675560, 31351120]

約数ペア:

[(1, 31351120), (2, 15675560), (4, 7837780), (5, 6270224), (8, 3918890), (10, 3135112), (16, 1959445), (20, 1567556), (40, 783778), (80, 391889)]