20668620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49211}}^1$

素因数の和:49230

約数の個数: 48

約数和(自身を含む): 66140928

約数和(自身を除く): 45472308

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49211, 98422, 147633, 196844, 246055, 295266, 344477, 492110, 590532, 688954, 738165, 984220, 1033431, 1377908, 1476330, 1722385, 2066862, 2952660, 3444770, 4133724, 5167155, 6889540, 10334310, 20668620]

約数ペア:

[(1, 20668620), (2, 10334310), (3, 6889540), (4, 5167155), (5, 4133724), (6, 3444770), (7, 2952660), (10, 2066862), (12, 1722385), (14, 1476330), (15, 1377908), (20, 1033431), (21, 984220), (28, 738165), (30, 688954), (35, 590532), (42, 492110), (60, 344477), (70, 295266), (84, 246055), (105, 196844), (140, 147633), (210, 98422), (420, 49211)]