21042540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{116903}}^1$

素因数の和:116918

約数の個数: 36

約数和(自身を含む): 63829584

約数和(自身を除く): 42787044

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 116903, 233806, 350709, 467612, 584515, 701418, 1052127, 1169030, 1402836, 1753545, 2104254, 2338060, 3507090, 4208508, 5260635, 7014180, 10521270, 21042540]

約数ペア:

[(1, 21042540), (2, 10521270), (3, 7014180), (4, 5260635), (5, 4208508), (6, 3507090), (9, 2338060), (10, 2104254), (12, 1753545), (15, 1402836), (18, 1169030), (20, 1052127), (30, 701418), (36, 584515), (45, 467612), (60, 350709), (90, 233806), (180, 116903)]