20920753

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{421}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 24847360

約数和(自身を除く): 3926607

約数列:

[1, 7, 31, 217, 229, 421, 1603, 2947, 7099, 13051, 49693, 91357, 96409, 674863, 2988679, 20920753]

約数ペア:

[(1, 20920753), (7, 2988679), (31, 674863), (217, 96409), (229, 91357), (421, 49693), (1603, 13051), (2947, 7099)]