20886210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{971}}^1$

素因数の和:1223

約数の個数: 48

約数和(自身を含む): 54587520

約数和(自身を除く): 33701310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 239, 478, 717, 971, 1195, 1434, 1942, 2151, 2390, 2913, 3585, 4302, 4855, 5826, 7170, 8739, 9710, 10755, 14565, 17478, 21510, 29130, 43695, 87390, 232069, 464138, 696207, 1160345, 1392414, 2088621, 2320690, 3481035, 4177242, 6962070, 10443105, 20886210]

約数ペア:

[(1, 20886210), (2, 10443105), (3, 6962070), (5, 4177242), (6, 3481035), (9, 2320690), (10, 2088621), (15, 1392414), (18, 1160345), (30, 696207), (45, 464138), (90, 232069), (239, 87390), (478, 43695), (717, 29130), (971, 21510), (1195, 17478), (1434, 14565), (1942, 10755), (2151, 9710), (2390, 8739), (2913, 7170), (3585, 5826), (4302, 4855)]