81272975

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{24443}}^1$

素因数の和:24479

約数の個数: 24

約数和(自身を含む): 121242240

約数和(自身を除く): 39969265

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 24443, 122215, 171101, 464417, 611075, 855505, 2322085, 3250919, 4277525, 11610425, 16254595, 81272975]

約数ペア:

[(1, 81272975), (5, 16254595), (7, 11610425), (19, 4277525), (25, 3250919), (35, 2322085), (95, 855505), (133, 611075), (175, 464417), (475, 171101), (665, 122215), (3325, 24443)]