20649618

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:548

約数の個数: 72

約数和(自身を含む): 51870000

約数和(自身を除く): 31220382

約数列:

[1, 2, 3, 6, 9, 11, 18, 19, 22, 33, 38, 57, 66, 99, 114, 121, 171, 198, 209, 242, 342, 363, 418, 499, 627, 726, 998, 1089, 1254, 1497, 1881, 2178, 2299, 2994, 3762, 4491, 4598, 5489, 6897, 8982, 9481, 10978, 13794, 16467, 18962, 20691, 28443, 32934, 41382, 49401, 56886, 60379, 85329, 98802, 104291, 120758, 170658, 181137, 208582, 312873, 362274, 543411, 625746, 938619, 1086822, 1147201, 1877238, 2294402, 3441603, 6883206, 10324809, 20649618]

約数ペア:

[(1, 20649618), (2, 10324809), (3, 6883206), (6, 3441603), (9, 2294402), (11, 1877238), (18, 1147201), (19, 1086822), (22, 938619), (33, 625746), (38, 543411), (57, 362274), (66, 312873), (99, 208582), (114, 181137), (121, 170658), (171, 120758), (198, 104291), (209, 98802), (242, 85329), (342, 60379), (363, 56886), (418, 49401), (499, 41382), (627, 32934), (726, 28443), (998, 20691), (1089, 18962), (1254, 16467), (1497, 13794), (1881, 10978), (2178, 9481), (2299, 8982), (2994, 6897), (3762, 5489), (4491, 4598)]