990308875

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{2647}}^1$

素因数の和:2776

約数の個数: 32

約数和(自身を含む): 1283877504

約数和(自身を除く): 293568629

約数列:

[1, 5, 25, 41, 73, 125, 205, 365, 1025, 1825, 2647, 2993, 5125, 9125, 13235, 14965, 66175, 74825, 108527, 193231, 330875, 374125, 542635, 966155, 2713175, 4830775, 7922471, 13565875, 24153875, 39612355, 198061775, 990308875]

約数ペア:

[(1, 990308875), (5, 198061775), (25, 39612355), (41, 24153875), (73, 13565875), (125, 7922471), (205, 4830775), (365, 2713175), (1025, 966155), (1825, 542635), (2647, 374125), (2993, 330875), (5125, 193231), (9125, 108527), (13235, 74825), (14965, 66175)]