20778207

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{1319}}^1$

素因数の和:1470

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7733793

約数列:

[1, 3, 59, 89, 177, 267, 1319, 3957, 5251, 15753, 77821, 117391, 233463, 352173, 6926069, 20778207]

約数ペア:

[(1, 20778207), (3, 6926069), (59, 352173), (89, 233463), (177, 117391), (267, 77821), (1319, 15753), (3957, 5251)]