81178741

素因数分解:

$7^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 97365120

約数和(自身を除く): 16186379

約数列:

[1, 7, 49, 67, 79, 313, 469, 553, 2191, 3283, 3871, 5293, 15337, 20971, 24727, 37051, 146797, 173089, 259357, 1027579, 1211623, 1656709, 11596963, 81178741]

約数ペア:

[(1, 81178741), (7, 11596963), (49, 1656709), (67, 1211623), (79, 1027579), (313, 259357), (469, 173089), (553, 146797), (2191, 37051), (3283, 24727), (3871, 20971), (5293, 15337)]