19971740

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9887}}^1$

素因数の和:9997

約数の個数: 24

約数和(自身を含む): 42360192

約数和(自身を除く): 22388452

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9887, 19774, 39548, 49435, 98870, 197740, 998587, 1997174, 3994348, 4992935, 9985870, 19971740]

約数ペア:

[(1, 19971740), (2, 9985870), (4, 4992935), (5, 3994348), (10, 1997174), (20, 998587), (101, 197740), (202, 98870), (404, 49435), (505, 39548), (1010, 19774), (2020, 9887)]