21357655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{577}}^1\times {\mathrm{673}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 28049184

約数和(自身を除く): 6691529

約数列:

[1, 5, 11, 55, 577, 673, 2885, 3365, 6347, 7403, 31735, 37015, 388321, 1941605, 4271531, 21357655]

約数ペア:

[(1, 21357655), (5, 4271531), (11, 1941605), (55, 388321), (577, 37015), (673, 31735), (2885, 7403), (3365, 6347)]