21871782

素因数分解:

$2^1\times 3^4\times {\mathrm{79}}^1\times {\mathrm{1709}}^1$

素因数の和:1802

約数の個数: 40

約数和(自身を含む): 49658400

約数和(自身を除く): 27786618

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 79, 81, 158, 162, 237, 474, 711, 1422, 1709, 2133, 3418, 4266, 5127, 6399, 10254, 12798, 15381, 30762, 46143, 92286, 135011, 138429, 270022, 276858, 405033, 810066, 1215099, 2430198, 3645297, 7290594, 10935891, 21871782]

約数ペア:

[(1, 21871782), (2, 10935891), (3, 7290594), (6, 3645297), (9, 2430198), (18, 1215099), (27, 810066), (54, 405033), (79, 276858), (81, 270022), (158, 138429), (162, 135011), (237, 92286), (474, 46143), (711, 30762), (1422, 15381), (1709, 12798), (2133, 10254), (3418, 6399), (4266, 5127)]