20121247991

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{617}}^1\times {\mathrm{11351}}^1$

素因数の和:12011

約数の個数: 24

約数和(自身を含む): 23109175584

約数和(自身を除く): 2987927593

約数列:

[1, 13, 17, 169, 221, 617, 2873, 8021, 10489, 11351, 104273, 136357, 147563, 192967, 1772641, 1918319, 2508571, 7003567, 32611423, 91046371, 119060639, 1183602823, 1547788307, 20121247991]

約数ペア:

[(1, 20121247991), (13, 1547788307), (17, 1183602823), (169, 119060639), (221, 91046371), (617, 32611423), (2873, 7003567), (8021, 2508571), (10489, 1918319), (11351, 1772641), (104273, 192967), (136357, 147563)]