261505585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1303}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 354896640

約数和(自身を除く): 93391055

約数列:

[1, 5, 11, 41, 55, 89, 205, 445, 451, 979, 1303, 2255, 3649, 4895, 6515, 14333, 18245, 40139, 53423, 71665, 115967, 200695, 267115, 579835, 587653, 1275637, 2938265, 4754647, 6378185, 23773235, 52301117, 261505585]

約数ペア:

[(1, 261505585), (5, 52301117), (11, 23773235), (41, 6378185), (55, 4754647), (89, 2938265), (205, 1275637), (445, 587653), (451, 579835), (979, 267115), (1303, 200695), (2255, 115967), (3649, 71665), (4895, 53423), (6515, 40139), (14333, 18245)]