20946040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30803}}^1$

素因数の和:30831

約数の個数: 32

約数和(自身を含む): 49902480

約数和(自身を除く): 28956440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30803, 61606, 123212, 154015, 246424, 308030, 523651, 616060, 1047302, 1232120, 2094604, 2618255, 4189208, 5236510, 10473020, 20946040]

約数ペア:

[(1, 20946040), (2, 10473020), (4, 5236510), (5, 4189208), (8, 2618255), (10, 2094604), (17, 1232120), (20, 1047302), (34, 616060), (40, 523651), (68, 308030), (85, 246424), (136, 154015), (170, 123212), (340, 61606), (680, 30803)]