28421840

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{7559}}^1$

素因数の和:7619

約数の個数: 40

約数和(自身を含む): 67495680

約数和(自身を除く): 39073840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 7559, 15118, 30236, 37795, 60472, 75590, 120944, 151180, 302360, 355273, 604720, 710546, 1421092, 1776365, 2842184, 3552730, 5684368, 7105460, 14210920, 28421840]

約数ペア:

[(1, 28421840), (2, 14210920), (4, 7105460), (5, 5684368), (8, 3552730), (10, 2842184), (16, 1776365), (20, 1421092), (40, 710546), (47, 604720), (80, 355273), (94, 302360), (188, 151180), (235, 120944), (376, 75590), (470, 60472), (752, 37795), (940, 30236), (1880, 15118), (3760, 7559)]