12945940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1039}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 18503660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1039, 1246, 1780, 2078, 2492, 3115, 4156, 5195, 6230, 7273, 10390, 12460, 14546, 20780, 29092, 36365, 72730, 92471, 145460, 184942, 369884, 462355, 647297, 924710, 1294594, 1849420, 2589188, 3236485, 6472970, 12945940]

約数ペア:

[(1, 12945940), (2, 6472970), (4, 3236485), (5, 2589188), (7, 1849420), (10, 1294594), (14, 924710), (20, 647297), (28, 462355), (35, 369884), (70, 184942), (89, 145460), (140, 92471), (178, 72730), (356, 36365), (445, 29092), (623, 20780), (890, 14546), (1039, 12460), (1246, 10390), (1780, 7273), (2078, 6230), (2492, 5195), (3115, 4156)]