19080820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2017}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 44751168

約数和(自身を除く): 25670348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2017, 2365, 4034, 4730, 8068, 9460, 10085, 20170, 22187, 40340, 44374, 86731, 88748, 110935, 173462, 221870, 346924, 433655, 443740, 867310, 954041, 1734620, 1908082, 3816164, 4770205, 9540410, 19080820]

約数ペア:

[(1, 19080820), (2, 9540410), (4, 4770205), (5, 3816164), (10, 1908082), (11, 1734620), (20, 954041), (22, 867310), (43, 443740), (44, 433655), (55, 346924), (86, 221870), (110, 173462), (172, 110935), (215, 88748), (220, 86731), (430, 44374), (473, 40340), (860, 22187), (946, 20170), (1892, 10085), (2017, 9460), (2365, 8068), (4034, 4730)]