80507440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{389}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 203112000

約数和(自身を除く): 122604560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 199, 208, 260, 389, 398, 520, 778, 796, 995, 1040, 1556, 1592, 1945, 1990, 2587, 3112, 3184, 3890, 3980, 5057, 5174, 6224, 7780, 7960, 10114, 10348, 12935, 15560, 15920, 20228, 20696, 25285, 25870, 31120, 40456, 41392, 50570, 51740, 77411, 80912, 101140, 103480, 154822, 202280, 206960, 309644, 387055, 404560, 619288, 774110, 1006343, 1238576, 1548220, 2012686, 3096440, 4025372, 5031715, 6192880, 8050744, 10063430, 16101488, 20126860, 40253720, 80507440]

約数ペア:

[(1, 80507440), (2, 40253720), (4, 20126860), (5, 16101488), (8, 10063430), (10, 8050744), (13, 6192880), (16, 5031715), (20, 4025372), (26, 3096440), (40, 2012686), (52, 1548220), (65, 1238576), (80, 1006343), (104, 774110), (130, 619288), (199, 404560), (208, 387055), (260, 309644), (389, 206960), (398, 202280), (520, 154822), (778, 103480), (796, 101140), (995, 80912), (1040, 77411), (1556, 51740), (1592, 50570), (1945, 41392), (1990, 40456), (2587, 31120), (3112, 25870), (3184, 25285), (3890, 20696), (3980, 20228), (5057, 15920), (5174, 15560), (6224, 12935), (7780, 10348), (7960, 10114)]