205127240

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{20431}}^1$

素因数の和:20693

約数の個数: 32

約数和(自身を含む): 463397760

約数和(自身を除く): 258270520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 20431, 40862, 81724, 102155, 163448, 204310, 408620, 817240, 5128181, 10256362, 20512724, 25640905, 41025448, 51281810, 102563620, 205127240]

約数ペア:

[(1, 205127240), (2, 102563620), (4, 51281810), (5, 41025448), (8, 25640905), (10, 20512724), (20, 10256362), (40, 5128181), (251, 817240), (502, 408620), (1004, 204310), (1255, 163448), (2008, 102155), (2510, 81724), (5020, 40862), (10040, 20431)]