21216274

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{1609}}^1$

素因数の和:1977

約数の個数: 16

約数和(自身を含む): 33616800

約数和(自身を除く): 12400526

約数列:

[1, 2, 19, 38, 347, 694, 1609, 3218, 6593, 13186, 30571, 61142, 558323, 1116646, 10608137, 21216274]

約数ペア:

[(1, 21216274), (2, 10608137), (19, 1116646), (38, 558323), (347, 61142), (694, 30571), (1609, 13186), (3218, 6593)]