21223085

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6947}}^1$

素因数の和:7012

約数の個数: 16

約数和(自身を含む): 28014336

約数和(自身を除く): 6791251

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6947, 34735, 90311, 326509, 451555, 1632545, 4244617, 21223085]

約数ペア:

[(1, 21223085), (5, 4244617), (13, 1632545), (47, 451555), (65, 326509), (235, 90311), (611, 34735), (3055, 6947)]