20782390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1229}}^1$

素因数の和:1344

約数の個数: 32

約数和(自身を含む): 39852000

約数和(自身を除く): 19069610

約数列:

[1, 2, 5, 10, 19, 38, 89, 95, 178, 190, 445, 890, 1229, 1691, 2458, 3382, 6145, 8455, 12290, 16910, 23351, 46702, 109381, 116755, 218762, 233510, 546905, 1093810, 2078239, 4156478, 10391195, 20782390]

約数ペア:

[(1, 20782390), (2, 10391195), (5, 4156478), (10, 2078239), (19, 1093810), (38, 546905), (89, 233510), (95, 218762), (178, 116755), (190, 109381), (445, 46702), (890, 23351), (1229, 16910), (1691, 12290), (2458, 8455), (3382, 6145)]