19181360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:402

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 30315472

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 307, 355, 440, 568, 614, 710, 781, 880, 1136, 1228, 1420, 1535, 1562, 2456, 2840, 3070, 3124, 3377, 3905, 4912, 5680, 6140, 6248, 6754, 7810, 12280, 12496, 13508, 15620, 16885, 21797, 24560, 27016, 31240, 33770, 43594, 54032, 62480, 67540, 87188, 108985, 135080, 174376, 217970, 239767, 270160, 348752, 435940, 479534, 871880, 959068, 1198835, 1743760, 1918136, 2397670, 3836272, 4795340, 9590680, 19181360]

約数ペア:

[(1, 19181360), (2, 9590680), (4, 4795340), (5, 3836272), (8, 2397670), (10, 1918136), (11, 1743760), (16, 1198835), (20, 959068), (22, 871880), (40, 479534), (44, 435940), (55, 348752), (71, 270160), (80, 239767), (88, 217970), (110, 174376), (142, 135080), (176, 108985), (220, 87188), (284, 67540), (307, 62480), (355, 54032), (440, 43594), (568, 33770), (614, 31240), (710, 27016), (781, 24560), (880, 21797), (1136, 16885), (1228, 15620), (1420, 13508), (1535, 12496), (1562, 12280), (2456, 7810), (2840, 6754), (3070, 6248), (3124, 6140), (3377, 5680), (3905, 4912)]