21672405

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10247}}^1$

素因数の和:10305

約数の個数: 24

約数和(自身を含む): 38368512

約数和(自身を除く): 16696107

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10247, 30741, 51235, 92223, 153705, 461115, 481609, 1444827, 2408045, 4334481, 7224135, 21672405]

約数ペア:

[(1, 21672405), (3, 7224135), (5, 4334481), (9, 2408045), (15, 1444827), (45, 481609), (47, 461115), (141, 153705), (235, 92223), (423, 51235), (705, 30741), (2115, 10247)]