20390325

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 36456000

約数和(自身を除く): 16065675

約数列:

[1, 3, 5, 15, 19, 25, 41, 57, 75, 95, 123, 205, 285, 349, 475, 615, 779, 1025, 1047, 1425, 1745, 2337, 3075, 3895, 5235, 6631, 8725, 11685, 14309, 19475, 19893, 26175, 33155, 42927, 58425, 71545, 99465, 165775, 214635, 271871, 357725, 497325, 815613, 1073175, 1359355, 4078065, 6796775, 20390325]

約数ペア:

[(1, 20390325), (3, 6796775), (5, 4078065), (15, 1359355), (19, 1073175), (25, 815613), (41, 497325), (57, 357725), (75, 271871), (95, 214635), (123, 165775), (205, 99465), (285, 71545), (349, 58425), (475, 42927), (615, 33155), (779, 26175), (1025, 19893), (1047, 19475), (1425, 14309), (1745, 11685), (2337, 8725), (3075, 6631), (3895, 5235)]