19503747

素因数分解:

$3^4\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:102

約数の個数: 60

約数和(自身を含む): 33192720

約数和(自身を除く): 13688973

約数列:

[1, 3, 9, 19, 23, 27, 29, 57, 69, 81, 87, 171, 207, 261, 361, 437, 513, 551, 621, 667, 783, 1083, 1311, 1539, 1653, 1863, 2001, 2349, 3249, 3933, 4959, 6003, 8303, 9747, 10469, 11799, 12673, 14877, 18009, 24909, 29241, 31407, 35397, 38019, 44631, 54027, 74727, 94221, 114057, 224181, 240787, 282663, 342171, 672543, 722361, 847989, 1026513, 2167083, 6501249, 19503747]

約数ペア:

[(1, 19503747), (3, 6501249), (9, 2167083), (19, 1026513), (23, 847989), (27, 722361), (29, 672543), (57, 342171), (69, 282663), (81, 240787), (87, 224181), (171, 114057), (207, 94221), (261, 74727), (361, 54027), (437, 44631), (513, 38019), (551, 35397), (621, 31407), (667, 29241), (783, 24909), (1083, 18009), (1311, 14877), (1539, 12673), (1653, 11799), (1863, 10469), (2001, 9747), (2349, 8303), (3249, 6003), (3933, 4959)]