20616480

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 50931360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 103, 120, 139, 144, 160, 180, 206, 240, 278, 288, 309, 360, 412, 417, 480, 515, 556, 618, 695, 720, 824, 834, 927, 1030, 1112, 1236, 1251, 1390, 1440, 1545, 1648, 1668, 1854, 2060, 2085, 2224, 2472, 2502, 2780, 3090, 3296, 3336, 3708, 4120, 4170, 4448, 4635, 4944, 5004, 5560, 6180, 6255, 6672, 7416, 8240, 8340, 9270, 9888, 10008, 11120, 12360, 12510, 13344, 14317, 14832, 16480, 16680, 18540, 20016, 22240, 24720, 25020, 28634, 29664, 33360, 37080, 40032, 42951, 49440, 50040, 57268, 66720, 71585, 74160, 85902, 100080, 114536, 128853, 143170, 148320, 171804, 200160, 214755, 229072, 257706, 286340, 343608, 429510, 458144, 515412, 572680, 644265, 687216, 859020, 1030824, 1145360, 1288530, 1374432, 1718040, 2061648, 2290720, 2577060, 3436080, 4123296, 5154120, 6872160, 10308240, 20616480]

約数ペア:

[(1, 20616480), (2, 10308240), (3, 6872160), (4, 5154120), (5, 4123296), (6, 3436080), (8, 2577060), (9, 2290720), (10, 2061648), (12, 1718040), (15, 1374432), (16, 1288530), (18, 1145360), (20, 1030824), (24, 859020), (30, 687216), (32, 644265), (36, 572680), (40, 515412), (45, 458144), (48, 429510), (60, 343608), (72, 286340), (80, 257706), (90, 229072), (96, 214755), (103, 200160), (120, 171804), (139, 148320), (144, 143170), (160, 128853), (180, 114536), (206, 100080), (240, 85902), (278, 74160), (288, 71585), (309, 66720), (360, 57268), (412, 50040), (417, 49440), (480, 42951), (515, 40032), (556, 37080), (618, 33360), (695, 29664), (720, 28634), (824, 25020), (834, 24720), (927, 22240), (1030, 20016), (1112, 18540), (1236, 16680), (1251, 16480), (1390, 14832), (1440, 14317), (1545, 13344), (1648, 12510), (1668, 12360), (1854, 11120), (2060, 10008), (2085, 9888), (2224, 9270), (2472, 8340), (2502, 8240), (2780, 7416), (3090, 6672), (3296, 6255), (3336, 6180), (3708, 5560), (4120, 5004), (4170, 4944), (4448, 4635)]