21118994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{42751}}^1$

素因数の和:42785

約数の個数: 16

約数和(自身を含む): 35911680

約数和(自身を除く): 14792686

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 42751, 85502, 555763, 812269, 1111526, 1624538, 10559497, 21118994]

約数ペア:

[(1, 21118994), (2, 10559497), (13, 1624538), (19, 1111526), (26, 812269), (38, 555763), (247, 85502), (494, 42751)]