20152900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2551}}^1$

素因数の和:2644

約数の個数: 36

約数和(自身を含む): 44302720

約数和(自身を除く): 24149820

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2551, 3950, 5102, 7900, 10204, 12755, 25510, 51020, 63775, 127550, 201529, 255100, 403058, 806116, 1007645, 2015290, 4030580, 5038225, 10076450, 20152900]

約数ペア:

[(1, 20152900), (2, 10076450), (4, 5038225), (5, 4030580), (10, 2015290), (20, 1007645), (25, 806116), (50, 403058), (79, 255100), (100, 201529), (158, 127550), (316, 63775), (395, 51020), (790, 25510), (1580, 12755), (1975, 10204), (2551, 7900), (3950, 5102)]