21000948040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3523649}}^1$

素因数の和:3523809

約数の個数: 32

約数和(自身を含む): 47569275000

約数和(自身を除く): 26568326960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 3523649, 7047298, 14094596, 17618245, 28189192, 35236490, 70472980, 140945960, 525023701, 1050047402, 2100094804, 2625118505, 4200189608, 5250237010, 10500474020, 21000948040]

約数ペア:

[(1, 21000948040), (2, 10500474020), (4, 5250237010), (5, 4200189608), (8, 2625118505), (10, 2100094804), (20, 1050047402), (40, 525023701), (149, 140945960), (298, 70472980), (596, 35236490), (745, 28189192), (1192, 17618245), (1490, 14094596), (2980, 7047298), (5960, 3523649)]