20778913

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2797}}^1$

素因数の和:2856

約数の個数: 16

約数和(自身を含む): 24174720

約数和(自身を除く): 3395807

約数列:

[1, 17, 19, 23, 323, 391, 437, 2797, 7429, 47549, 53143, 64331, 903431, 1093627, 1222289, 20778913]

約数ペア:

[(1, 20778913), (17, 1222289), (19, 1093627), (23, 903431), (323, 64331), (391, 53143), (437, 47549), (2797, 7429)]