861025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:153

約数の個数: 24

約数和(自身を含む): 1214208

約数和(自身を除く): 353183

約数列:

[1, 5, 11, 25, 31, 55, 101, 155, 275, 341, 505, 775, 1111, 1705, 2525, 3131, 5555, 8525, 15655, 27775, 34441, 78275, 172205, 861025]

約数ペア:

[(1, 861025), (5, 172205), (11, 78275), (25, 34441), (31, 27775), (55, 15655), (101, 8525), (155, 5555), (275, 3131), (341, 2525), (505, 1705), (775, 1111)]