28998009

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 47099520

約数和(自身を除く): 18101511

約数列:

[1, 3, 9, 19, 23, 57, 69, 73, 101, 171, 207, 219, 303, 437, 657, 909, 1311, 1387, 1679, 1919, 2323, 3933, 4161, 5037, 5757, 6969, 7373, 12483, 15111, 17271, 20907, 22119, 31901, 44137, 66357, 95703, 132411, 140087, 169579, 287109, 397233, 420261, 508737, 1260783, 1526211, 3222001, 9666003, 28998009]

約数ペア:

[(1, 28998009), (3, 9666003), (9, 3222001), (19, 1526211), (23, 1260783), (57, 508737), (69, 420261), (73, 397233), (101, 287109), (171, 169579), (207, 140087), (219, 132411), (303, 95703), (437, 66357), (657, 44137), (909, 31901), (1311, 22119), (1387, 20907), (1679, 17271), (1919, 15111), (2323, 12483), (3933, 7373), (4161, 6969), (5037, 5757)]