21241960

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{1447}}^1$

素因数の和:1825

約数の個数: 32

約数和(自身を含む): 47957760

約数和(自身を除く): 26715800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1447, 1468, 1835, 2894, 2936, 3670, 5788, 7235, 7340, 11576, 14470, 14680, 28940, 57880, 531049, 1062098, 2124196, 2655245, 4248392, 5310490, 10620980, 21241960]

約数ペア:

[(1, 21241960), (2, 10620980), (4, 5310490), (5, 4248392), (8, 2655245), (10, 2124196), (20, 1062098), (40, 531049), (367, 57880), (734, 28940), (1447, 14680), (1468, 14470), (1835, 11576), (2894, 7340), (2936, 7235), (3670, 5788)]