21690568

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51157}}^1$

素因数の和:51216

約数の個数: 16

約数和(自身を含む): 41437980

約数和(自身を除く): 19747412

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51157, 102314, 204628, 409256, 2711321, 5422642, 10845284, 21690568]

約数ペア:

[(1, 21690568), (2, 10845284), (4, 5422642), (8, 2711321), (53, 409256), (106, 204628), (212, 102314), (424, 51157)]