28743813

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{239}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 21575547

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 83, 161, 207, 239, 249, 483, 581, 717, 747, 1449, 1673, 1743, 1909, 2151, 5019, 5229, 5497, 5727, 13363, 15057, 16491, 17181, 19837, 38479, 40089, 49473, 59511, 115437, 120267, 138859, 178533, 346311, 416577, 456251, 1249731, 1368753, 3193757, 4106259, 9581271, 28743813]

約数ペア:

[(1, 28743813), (3, 9581271), (7, 4106259), (9, 3193757), (21, 1368753), (23, 1249731), (63, 456251), (69, 416577), (83, 346311), (161, 178533), (207, 138859), (239, 120267), (249, 115437), (483, 59511), (581, 49473), (717, 40089), (747, 38479), (1449, 19837), (1673, 17181), (1743, 16491), (1909, 15057), (2151, 13363), (5019, 5727), (5229, 5497)]