21918010

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21701}}^1$

素因数の和:21809

約数の個数: 16

約数和(自身を含む): 39844872

約数和(自身を除く): 17926862

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 21701, 43402, 108505, 217010, 2191801, 4383602, 10959005, 21918010]

約数ペア:

[(1, 21918010), (2, 10959005), (5, 4383602), (10, 2191801), (101, 217010), (202, 108505), (505, 43402), (1010, 21701)]