87719420

素因数分解:

$2^2\times 5^1\times {\mathrm{4385971}}^1$

素因数の和:4385980

約数の個数: 12

約数和(自身を含む): 184210824

約数和(自身を除く): 96491404

約数列:

[1, 2, 4, 5, 10, 20, 4385971, 8771942, 17543884, 21929855, 43859710, 87719420]

約数ペア:

[(1, 87719420), (2, 43859710), (4, 21929855), (5, 17543884), (10, 8771942), (20, 4385971)]