18890883

素因数分解:

$3^2\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 48

約数和(自身を含む): 31973760

約数和(自身を除く): 13082877

約数列:

[1, 3, 9, 11, 19, 33, 57, 83, 99, 121, 171, 209, 249, 363, 627, 747, 913, 1089, 1331, 1577, 1881, 2299, 2739, 3993, 4731, 6897, 8217, 10043, 11979, 14193, 17347, 20691, 25289, 30129, 52041, 75867, 90387, 110473, 156123, 190817, 227601, 331419, 572451, 994257, 1717353, 2098987, 6296961, 18890883]

約数ペア:

[(1, 18890883), (3, 6296961), (9, 2098987), (11, 1717353), (19, 994257), (33, 572451), (57, 331419), (83, 227601), (99, 190817), (121, 156123), (171, 110473), (209, 90387), (249, 75867), (363, 52041), (627, 30129), (747, 25289), (913, 20691), (1089, 17347), (1331, 14193), (1577, 11979), (1881, 10043), (2299, 8217), (2739, 6897), (3993, 4731)]