19731861

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 32572800

約数和(自身を除く): 12840939

約数列:

[1, 3, 9, 19, 23, 29, 57, 69, 87, 171, 173, 207, 261, 437, 519, 551, 667, 1311, 1557, 1653, 2001, 3287, 3933, 3979, 4959, 5017, 6003, 9861, 11937, 12673, 15051, 29583, 35811, 38019, 45153, 75601, 95323, 114057, 115391, 226803, 285969, 346173, 680409, 857907, 1038519, 2192429, 6577287, 19731861]

約数ペア:

[(1, 19731861), (3, 6577287), (9, 2192429), (19, 1038519), (23, 857907), (29, 680409), (57, 346173), (69, 285969), (87, 226803), (171, 115391), (173, 114057), (207, 95323), (261, 75601), (437, 45153), (519, 38019), (551, 35811), (667, 29583), (1311, 15051), (1557, 12673), (1653, 11937), (2001, 9861), (3287, 6003), (3933, 5017), (3979, 4959)]