20391140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13241}}^1$

素因数の和:13268

約数の個数: 48

約数和(自身を含む): 53391744

約数和(自身を除く): 33000604

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13241, 26482, 52964, 66205, 92687, 132410, 145651, 185374, 264820, 291302, 370748, 463435, 582604, 728255, 926870, 1019557, 1456510, 1853740, 2039114, 2913020, 4078228, 5097785, 10195570, 20391140]

約数ペア:

[(1, 20391140), (2, 10195570), (4, 5097785), (5, 4078228), (7, 2913020), (10, 2039114), (11, 1853740), (14, 1456510), (20, 1019557), (22, 926870), (28, 728255), (35, 582604), (44, 463435), (55, 370748), (70, 291302), (77, 264820), (110, 185374), (140, 145651), (154, 132410), (220, 92687), (308, 66205), (385, 52964), (770, 26482), (1540, 13241)]