20748721

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{1543}}^1$

素因数の和:1680

約数の個数: 16

約数和(自身を含む): 25346304

約数和(自身を除く): 4597583

約数列:

[1, 7, 17, 113, 119, 791, 1543, 1921, 10801, 13447, 26231, 174359, 183617, 1220513, 2964103, 20748721]

約数ペア:

[(1, 20748721), (7, 2964103), (17, 1220513), (113, 183617), (119, 174359), (791, 26231), (1543, 13447), (1921, 10801)]