80188020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{40499}}^1$

素因数の和:40525

約数の個数: 72

約数和(自身を含む): 265356000

約数和(自身を除く): 185167980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 40499, 80998, 121497, 161996, 202495, 242994, 364491, 404990, 445489, 485988, 607485, 728982, 809980, 890978, 1214970, 1336467, 1457964, 1781956, 1822455, 2227445, 2429940, 2672934, 3644910, 4009401, 4454890, 5345868, 6682335, 7289820, 8018802, 8909780, 13364670, 16037604, 20047005, 26729340, 40094010, 80188020]

約数ペア:

[(1, 80188020), (2, 40094010), (3, 26729340), (4, 20047005), (5, 16037604), (6, 13364670), (9, 8909780), (10, 8018802), (11, 7289820), (12, 6682335), (15, 5345868), (18, 4454890), (20, 4009401), (22, 3644910), (30, 2672934), (33, 2429940), (36, 2227445), (44, 1822455), (45, 1781956), (55, 1457964), (60, 1336467), (66, 1214970), (90, 890978), (99, 809980), (110, 728982), (132, 607485), (165, 485988), (180, 445489), (198, 404990), (220, 364491), (330, 242994), (396, 202495), (495, 161996), (660, 121497), (990, 80998), (1980, 40499)]