989900525

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{21649}}^1$

素因数の和:21749

約数の個数: 24

約数和(自身を含む): 1288608000

約数和(自身を除く): 298707475

約数列:

[1, 5, 25, 31, 59, 155, 295, 775, 1475, 1829, 9145, 21649, 45725, 108245, 541225, 671119, 1277291, 3355595, 6386455, 16777975, 31932275, 39596021, 197980105, 989900525]

約数ペア:

[(1, 989900525), (5, 197980105), (25, 39596021), (31, 31932275), (59, 16777975), (155, 6386455), (295, 3355595), (775, 1277291), (1475, 671119), (1829, 541225), (9145, 108245), (21649, 45725)]