28242760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7759}}^1$

素因数の和:7790

約数の個数: 64

約数和(自身を含む): 78220800

約数和(自身を除く): 49978040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7759, 15518, 31036, 38795, 54313, 62072, 77590, 100867, 108626, 155180, 201734, 217252, 271565, 310360, 403468, 434504, 504335, 543130, 706069, 806936, 1008670, 1086260, 1412138, 2017340, 2172520, 2824276, 3530345, 4034680, 5648552, 7060690, 14121380, 28242760]

約数ペア:

[(1, 28242760), (2, 14121380), (4, 7060690), (5, 5648552), (7, 4034680), (8, 3530345), (10, 2824276), (13, 2172520), (14, 2017340), (20, 1412138), (26, 1086260), (28, 1008670), (35, 806936), (40, 706069), (52, 543130), (56, 504335), (65, 434504), (70, 403468), (91, 310360), (104, 271565), (130, 217252), (140, 201734), (182, 155180), (260, 108626), (280, 100867), (364, 77590), (455, 62072), (520, 54313), (728, 38795), (910, 31036), (1820, 15518), (3640, 7759)]