161829940

素因数分解:

$2^2\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{5623}}^1$

素因数の和:7071

約数の個数: 24

約数和(自身を含む): 340139520

約数和(自身を除く): 178309580

約数列:

[1, 2, 4, 5, 10, 20, 1439, 2878, 5623, 5756, 7195, 11246, 14390, 22492, 28115, 28780, 56230, 112460, 8091497, 16182994, 32365988, 40457485, 80914970, 161829940]

約数ペア:

[(1, 161829940), (2, 80914970), (4, 40457485), (5, 32365988), (10, 16182994), (20, 8091497), (1439, 112460), (2878, 56230), (5623, 28780), (5756, 28115), (7195, 22492), (11246, 14390)]