7981857

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4013}}^1$

素因数の和:4049

約数の個数: 24

約数和(自身を含む): 13149864

約数和(自身を除く): 5168007

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 4013, 12039, 36117, 52169, 68221, 156507, 204663, 469521, 613989, 886873, 2660619, 7981857]

約数ペア:

[(1, 7981857), (3, 2660619), (9, 886873), (13, 613989), (17, 469521), (39, 204663), (51, 156507), (117, 68221), (153, 52169), (221, 36117), (663, 12039), (1989, 4013)]