20408088680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72886031}}^1$

素因数の和:72886049

約数の個数: 32

約数和(自身を含む): 52477943040

約数和(自身を除く): 32069854360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72886031, 145772062, 291544124, 364430155, 510202217, 583088248, 728860310, 1020404434, 1457720620, 2040808868, 2551011085, 2915441240, 4081617736, 5102022170, 10204044340, 20408088680]

約数ペア:

[(1, 20408088680), (2, 10204044340), (4, 5102022170), (5, 4081617736), (7, 2915441240), (8, 2551011085), (10, 2040808868), (14, 1457720620), (20, 1020404434), (28, 728860310), (35, 583088248), (40, 510202217), (56, 364430155), (70, 291544124), (140, 145772062), (280, 72886031)]