20991924

素因数分解:

$2^2\times 3^2\times {\mathrm{719}}^1\times {\mathrm{811}}^1$

素因数の和:1540

約数の個数: 36

約数和(自身を含む): 53202240

約数和(自身を除く): 32210316

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 719, 811, 1438, 1622, 2157, 2433, 2876, 3244, 4314, 4866, 6471, 7299, 8628, 9732, 12942, 14598, 25884, 29196, 583109, 1166218, 1749327, 2332436, 3498654, 5247981, 6997308, 10495962, 20991924]

約数ペア:

[(1, 20991924), (2, 10495962), (3, 6997308), (4, 5247981), (6, 3498654), (9, 2332436), (12, 1749327), (18, 1166218), (36, 583109), (719, 29196), (811, 25884), (1438, 14598), (1622, 12942), (2157, 9732), (2433, 8628), (2876, 7299), (3244, 6471), (4314, 4866)]