20804130

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1663}}^1$

素因数の和:1815

約数の個数: 48

約数和(自身を含む): 54512640

約数和(自身を除く): 33708510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 278, 417, 695, 834, 1251, 1390, 1663, 2085, 2502, 3326, 4170, 4989, 6255, 8315, 9978, 12510, 14967, 16630, 24945, 29934, 49890, 74835, 149670, 231157, 462314, 693471, 1155785, 1386942, 2080413, 2311570, 3467355, 4160826, 6934710, 10402065, 20804130]

約数ペア:

[(1, 20804130), (2, 10402065), (3, 6934710), (5, 4160826), (6, 3467355), (9, 2311570), (10, 2080413), (15, 1386942), (18, 1155785), (30, 693471), (45, 462314), (90, 231157), (139, 149670), (278, 74835), (417, 49890), (695, 29934), (834, 24945), (1251, 16630), (1390, 14967), (1663, 12510), (2085, 9978), (2502, 8315), (3326, 6255), (4170, 4989)]