128828080

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:734

約数の個数: 80

約数和(自身を含む): 312462144

約数和(自身を除く): 183634064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 142, 148, 185, 284, 296, 355, 370, 568, 592, 613, 710, 740, 1136, 1226, 1420, 1480, 2452, 2627, 2840, 2960, 3065, 4904, 5254, 5680, 6130, 9808, 10508, 12260, 13135, 21016, 22681, 24520, 26270, 42032, 43523, 45362, 49040, 52540, 87046, 90724, 105080, 113405, 174092, 181448, 210160, 217615, 226810, 348184, 362896, 435230, 453620, 696368, 870460, 907240, 1610351, 1740920, 1814480, 3220702, 3481840, 6441404, 8051755, 12882808, 16103510, 25765616, 32207020, 64414040, 128828080]

約数ペア:

[(1, 128828080), (2, 64414040), (4, 32207020), (5, 25765616), (8, 16103510), (10, 12882808), (16, 8051755), (20, 6441404), (37, 3481840), (40, 3220702), (71, 1814480), (74, 1740920), (80, 1610351), (142, 907240), (148, 870460), (185, 696368), (284, 453620), (296, 435230), (355, 362896), (370, 348184), (568, 226810), (592, 217615), (613, 210160), (710, 181448), (740, 174092), (1136, 113405), (1226, 105080), (1420, 90724), (1480, 87046), (2452, 52540), (2627, 49040), (2840, 45362), (2960, 43523), (3065, 42032), (4904, 26270), (5254, 24520), (5680, 22681), (6130, 21016), (9808, 13135), (10508, 12260)]