20038520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{947}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 47181960

約数和(自身を除く): 27143440

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 529, 920, 947, 1058, 1894, 2116, 2645, 3788, 4232, 4735, 5290, 7576, 9470, 10580, 18940, 21160, 21781, 37880, 43562, 87124, 108905, 174248, 217810, 435620, 500963, 871240, 1001926, 2003852, 2504815, 4007704, 5009630, 10019260, 20038520]

約数ペア:

[(1, 20038520), (2, 10019260), (4, 5009630), (5, 4007704), (8, 2504815), (10, 2003852), (20, 1001926), (23, 871240), (40, 500963), (46, 435620), (92, 217810), (115, 174248), (184, 108905), (230, 87124), (460, 43562), (529, 37880), (920, 21781), (947, 21160), (1058, 18940), (1894, 10580), (2116, 9470), (2645, 7576), (3788, 5290), (4232, 4735)]