340620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{811}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 1091328

約数和(自身を除く): 750708

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, 811, 1622, 2433, 3244, 4055, 4866, 5677, 8110, 9732, 11354, 12165, 16220, 17031, 22708, 24330, 28385, 34062, 48660, 56770, 68124, 85155, 113540, 170310, 340620]

約数ペア:

[(1, 340620), (2, 170310), (3, 113540), (4, 85155), (5, 68124), (6, 56770), (7, 48660), (10, 34062), (12, 28385), (14, 24330), (15, 22708), (20, 17031), (21, 16220), (28, 12165), (30, 11354), (35, 9732), (42, 8110), (60, 5677), (70, 4866), (84, 4055), (105, 3244), (140, 2433), (210, 1622), (420, 811)]