18744560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5449}}^1$

素因数の和:5505

約数の個数: 40

約数和(自身を含む): 44602800

約数和(自身を除く): 25858240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5449, 10898, 21796, 27245, 43592, 54490, 87184, 108980, 217960, 234307, 435920, 468614, 937228, 1171535, 1874456, 2343070, 3748912, 4686140, 9372280, 18744560]

約数ペア:

[(1, 18744560), (2, 9372280), (4, 4686140), (5, 3748912), (8, 2343070), (10, 1874456), (16, 1171535), (20, 937228), (40, 468614), (43, 435920), (80, 234307), (86, 217960), (172, 108980), (215, 87184), (344, 54490), (430, 43592), (688, 27245), (860, 21796), (1720, 10898), (3440, 5449)]