18885580

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2753}}^1$

素因数の和:2783

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 27381620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2753, 3430, 5506, 6860, 11012, 13765, 19271, 27530, 38542, 55060, 77084, 96355, 134897, 192710, 269794, 385420, 539588, 674485, 944279, 1348970, 1888558, 2697940, 3777116, 4721395, 9442790, 18885580]

約数ペア:

[(1, 18885580), (2, 9442790), (4, 4721395), (5, 3777116), (7, 2697940), (10, 1888558), (14, 1348970), (20, 944279), (28, 674485), (35, 539588), (49, 385420), (70, 269794), (98, 192710), (140, 134897), (196, 96355), (245, 77084), (343, 55060), (490, 38542), (686, 27530), (980, 19271), (1372, 13765), (1715, 11012), (2753, 6860), (3430, 5506)]