21378376

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{17021}}^1$

素因数の和:17184

約数の個数: 16

約数和(自身を含む): 40342140

約数和(自身を除く): 18963764

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 17021, 34042, 68084, 136168, 2672297, 5344594, 10689188, 21378376]

約数ペア:

[(1, 21378376), (2, 10689188), (4, 5344594), (8, 2672297), (157, 136168), (314, 68084), (628, 34042), (1256, 17021)]