20721036378

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{839}}^1\times {\mathrm{30949}}^1$

素因数の和:31819

約数の個数: 64

約数和(自身を含む): 49916160000

約数和(自身を除く): 29195123622

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798, 839, 1678, 2517, 5034, 5873, 11746, 15941, 17619, 30949, 31882, 35238, 47823, 61898, 92847, 95646, 111587, 185694, 216643, 223174, 334761, 433286, 588031, 649929, 669522, 1176062, 1299858, 1764093, 3528186, 4116217, 8232434, 12348651, 24697302, 25966211, 51932422, 77898633, 155797266, 181763477, 363526954, 493358009, 545290431, 986716018, 1090580862, 1480074027, 2960148054, 3453506063, 6907012126, 10360518189, 20721036378]

約数ペア:

[(1, 20721036378), (2, 10360518189), (3, 6907012126), (6, 3453506063), (7, 2960148054), (14, 1480074027), (19, 1090580862), (21, 986716018), (38, 545290431), (42, 493358009), (57, 363526954), (114, 181763477), (133, 155797266), (266, 77898633), (399, 51932422), (798, 25966211), (839, 24697302), (1678, 12348651), (2517, 8232434), (5034, 4116217), (5873, 3528186), (11746, 1764093), (15941, 1299858), (17619, 1176062), (30949, 669522), (31882, 649929), (35238, 588031), (47823, 433286), (61898, 334761), (92847, 223174), (95646, 216643), (111587, 185694)]