8390425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:273

約数の個数: 24

約数和(自身を含む): 10981440

約数和(自身を除く): 2591015

約数列:

[1, 5, 25, 29, 71, 145, 163, 355, 725, 815, 1775, 2059, 4075, 4727, 10295, 11573, 23635, 51475, 57865, 118175, 289325, 335617, 1678085, 8390425]

約数ペア:

[(1, 8390425), (5, 1678085), (25, 335617), (29, 289325), (71, 118175), (145, 57865), (163, 51475), (355, 23635), (725, 11573), (815, 10295), (1775, 4727), (2059, 4075)]