21811525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{977}}^1$

素因数の和:1053

約数の個数: 24

約数和(自身を含む): 29105280

約数和(自身を除く): 7293755

約数列:

[1, 5, 19, 25, 47, 95, 235, 475, 893, 977, 1175, 4465, 4885, 18563, 22325, 24425, 45919, 92815, 229595, 464075, 872461, 1147975, 4362305, 21811525]

約数ペア:

[(1, 21811525), (5, 4362305), (19, 1147975), (25, 872461), (47, 464075), (95, 229595), (235, 92815), (475, 45919), (893, 24425), (977, 22325), (1175, 18563), (4465, 4885)]