20041520

素因数分解:

$2^4\times 5^1\times {\mathrm{379}}^1\times {\mathrm{661}}^1$

素因数の和:1053

約数の個数: 40

約数和(自身を含む): 46790160

約数和(自身を除く): 26748640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 379, 661, 758, 1322, 1516, 1895, 2644, 3032, 3305, 3790, 5288, 6064, 6610, 7580, 10576, 13220, 15160, 26440, 30320, 52880, 250519, 501038, 1002076, 1252595, 2004152, 2505190, 4008304, 5010380, 10020760, 20041520]

約数ペア:

[(1, 20041520), (2, 10020760), (4, 5010380), (5, 4008304), (8, 2505190), (10, 2004152), (16, 1252595), (20, 1002076), (40, 501038), (80, 250519), (379, 52880), (661, 30320), (758, 26440), (1322, 15160), (1516, 13220), (1895, 10576), (2644, 7580), (3032, 6610), (3305, 6064), (3790, 5288)]