21251906

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{11197}}^1$

素因数の和:11285

約数の個数: 16

約数和(自身を含む): 34803384

約数和(自身を除く): 13551478

約数列:

[1, 2, 13, 26, 73, 146, 949, 1898, 11197, 22394, 145561, 291122, 817381, 1634762, 10625953, 21251906]

約数ペア:

[(1, 21251906), (2, 10625953), (13, 1634762), (26, 817381), (73, 291122), (146, 145561), (949, 22394), (1898, 11197)]