81348040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{13649}}^1$

素因数の和:13809

約数の個数: 32

約数和(自身を含む): 184275000

約数和(自身を除く): 102926960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 13649, 27298, 54596, 68245, 109192, 136490, 272980, 545960, 2033701, 4067402, 8134804, 10168505, 16269608, 20337010, 40674020, 81348040]

約数ペア:

[(1, 81348040), (2, 40674020), (4, 20337010), (5, 16269608), (8, 10168505), (10, 8134804), (20, 4067402), (40, 2033701), (149, 545960), (298, 272980), (596, 136490), (745, 109192), (1192, 68245), (1490, 54596), (2980, 27298), (5960, 13649)]