21154778

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1\times {\mathrm{701}}^1$

素因数の和:973

約数の個数: 16

約数和(自身を含む): 32348160

約数和(自身を除く): 11193382

約数列:

[1, 2, 79, 158, 191, 382, 701, 1402, 15089, 30178, 55379, 110758, 133891, 267782, 10577389, 21154778]

約数ペア:

[(1, 21154778), (2, 10577389), (79, 267782), (158, 133891), (191, 110758), (382, 55379), (701, 30178), (1402, 15089)]