1811920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:124

約数の個数: 80

約数和(自身を含む): 4821120

約数和(自身を除く): 3009200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 71, 80, 88, 110, 116, 142, 145, 176, 220, 232, 284, 290, 319, 355, 440, 464, 568, 580, 638, 710, 781, 880, 1136, 1160, 1276, 1420, 1562, 1595, 2059, 2320, 2552, 2840, 3124, 3190, 3905, 4118, 5104, 5680, 6248, 6380, 7810, 8236, 10295, 12496, 12760, 15620, 16472, 20590, 22649, 25520, 31240, 32944, 41180, 45298, 62480, 82360, 90596, 113245, 164720, 181192, 226490, 362384, 452980, 905960, 1811920]

約数ペア:

[(1, 1811920), (2, 905960), (4, 452980), (5, 362384), (8, 226490), (10, 181192), (11, 164720), (16, 113245), (20, 90596), (22, 82360), (29, 62480), (40, 45298), (44, 41180), (55, 32944), (58, 31240), (71, 25520), (80, 22649), (88, 20590), (110, 16472), (116, 15620), (142, 12760), (145, 12496), (176, 10295), (220, 8236), (232, 7810), (284, 6380), (290, 6248), (319, 5680), (355, 5104), (440, 4118), (464, 3905), (568, 3190), (580, 3124), (638, 2840), (710, 2552), (781, 2320), (880, 2059), (1136, 1595), (1160, 1562), (1276, 1420)]