19907797

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7057}}^1$

素因数の和:7108

約数の個数: 16

約数和(自身を含む): 25295872

約数和(自身を除く): 5388075

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7057, 49399, 91741, 218767, 642187, 1531369, 2843971, 19907797]

約数ペア:

[(1, 19907797), (7, 2843971), (13, 1531369), (31, 642187), (91, 218767), (217, 91741), (403, 49399), (2821, 7057)]