21204418

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{683}}^1$

素因数の和:766

約数の個数: 24

約数和(自身を含む): 34399728

約数和(自身を除く): 13195310

約数列:

[1, 2, 19, 38, 43, 86, 361, 683, 722, 817, 1366, 1634, 12977, 15523, 25954, 29369, 31046, 58738, 246563, 493126, 558011, 1116022, 10602209, 21204418]

約数ペア:

[(1, 21204418), (2, 10602209), (19, 1116022), (38, 558011), (43, 493126), (86, 246563), (361, 58738), (683, 31046), (722, 29369), (817, 25954), (1366, 15523), (1634, 12977)]