20680080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{433}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 64579200

約数和(自身を除く): 43899120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 199, 240, 398, 433, 597, 796, 866, 995, 1194, 1299, 1592, 1732, 1990, 2165, 2388, 2598, 2985, 3184, 3464, 3980, 4330, 4776, 5196, 5970, 6495, 6928, 7960, 8660, 9552, 10392, 11940, 12990, 15920, 17320, 20784, 23880, 25980, 34640, 47760, 51960, 86167, 103920, 172334, 258501, 344668, 430835, 517002, 689336, 861670, 1034004, 1292505, 1378672, 1723340, 2068008, 2585010, 3446680, 4136016, 5170020, 6893360, 10340040, 20680080]

約数ペア:

[(1, 20680080), (2, 10340040), (3, 6893360), (4, 5170020), (5, 4136016), (6, 3446680), (8, 2585010), (10, 2068008), (12, 1723340), (15, 1378672), (16, 1292505), (20, 1034004), (24, 861670), (30, 689336), (40, 517002), (48, 430835), (60, 344668), (80, 258501), (120, 172334), (199, 103920), (240, 86167), (398, 51960), (433, 47760), (597, 34640), (796, 25980), (866, 23880), (995, 20784), (1194, 17320), (1299, 15920), (1592, 12990), (1732, 11940), (1990, 10392), (2165, 9552), (2388, 8660), (2598, 7960), (2985, 6928), (3184, 6495), (3464, 5970), (3980, 5196), (4330, 4776)]