20175255

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 37043136

約数和(自身を除く): 16867881

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 101, 115, 193, 207, 303, 345, 505, 579, 909, 965, 1035, 1515, 1737, 2323, 2895, 4439, 4545, 6969, 8685, 11615, 13317, 19493, 20907, 22195, 34845, 39951, 58479, 66585, 97465, 104535, 175437, 199755, 292395, 448339, 877185, 1345017, 2241695, 4035051, 6725085, 20175255]

約数ペア:

[(1, 20175255), (3, 6725085), (5, 4035051), (9, 2241695), (15, 1345017), (23, 877185), (45, 448339), (69, 292395), (101, 199755), (115, 175437), (193, 104535), (207, 97465), (303, 66585), (345, 58479), (505, 39951), (579, 34845), (909, 22195), (965, 20907), (1035, 19493), (1515, 13317), (1737, 11615), (2323, 8685), (2895, 6969), (4439, 4545)]