87707780

素因数分解:

$2^2\times 5^1\times {\mathrm{4385389}}^1$

素因数の和:4385398

約数の個数: 12

約数和(自身を含む): 184186380

約数和(自身を除く): 96478600

約数列:

[1, 2, 4, 5, 10, 20, 4385389, 8770778, 17541556, 21926945, 43853890, 87707780]

約数ペア:

[(1, 87707780), (2, 43853890), (4, 21926945), (5, 17541556), (10, 8770778), (20, 4385389)]