21401866

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{4111}}^1$

素因数の和:4269

約数の個数: 16

約数和(自身を含む): 34047360

約数和(自身を除く): 12645494

約数列:

[1, 2, 19, 38, 137, 274, 2603, 4111, 5206, 8222, 78109, 156218, 563207, 1126414, 10700933, 21401866]

約数ペア:

[(1, 21401866), (2, 10700933), (19, 1126414), (38, 563207), (137, 156218), (274, 78109), (2603, 8222), (4111, 5206)]