20961199

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{911}}^1$

素因数の和:1110

約数の個数: 16

約数和(自身を含む): 25390080

約数和(自身を除く): 4428881

約数列:

[1, 7, 19, 133, 173, 911, 1211, 3287, 6377, 17309, 23009, 121163, 157603, 1103221, 2994457, 20961199]

約数ペア:

[(1, 20961199), (7, 2994457), (19, 1103221), (133, 157603), (173, 121163), (911, 23009), (1211, 17309), (3287, 6377)]