21321978

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{209039}}^1$

素因数の和:209061

約数の個数: 16

約数和(自身を含む): 45152640

約数和(自身を除く): 23830662

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 209039, 418078, 627117, 1254234, 3553663, 7107326, 10660989, 21321978]

約数ペア:

[(1, 21321978), (2, 10660989), (3, 7107326), (6, 3553663), (17, 1254234), (34, 627117), (51, 418078), (102, 209039)]