20180457800

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1421159}}^1$

素因数の和:1421246

約数の個数: 48

約数和(自身を含む): 47580436800

約数和(自身を除く): 27399979000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1420, 1775, 2840, 3550, 7100, 14200, 1421159, 2842318, 5684636, 7105795, 11369272, 14211590, 28423180, 35528975, 56846360, 71057950, 100902289, 142115900, 201804578, 284231800, 403609156, 504511445, 807218312, 1009022890, 2018045780, 2522557225, 4036091560, 5045114450, 10090228900, 20180457800]

約数ペア:

[(1, 20180457800), (2, 10090228900), (4, 5045114450), (5, 4036091560), (8, 2522557225), (10, 2018045780), (20, 1009022890), (25, 807218312), (40, 504511445), (50, 403609156), (71, 284231800), (100, 201804578), (142, 142115900), (200, 100902289), (284, 71057950), (355, 56846360), (568, 35528975), (710, 28423180), (1420, 14211590), (1775, 11369272), (2840, 7105795), (3550, 5684636), (7100, 2842318), (14200, 1421159)]