40393940

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19997}}^1$

素因数の和:20107

約数の個数: 24

約数和(自身を含む): 85671432

約数和(自身を除く): 45277492

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 19997, 39994, 79988, 99985, 199970, 399940, 2019697, 4039394, 8078788, 10098485, 20196970, 40393940]

約数ペア:

[(1, 40393940), (2, 20196970), (4, 10098485), (5, 8078788), (10, 4039394), (20, 2019697), (101, 399940), (202, 199970), (404, 99985), (505, 79988), (1010, 39994), (2020, 19997)]