339780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{809}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 1088640

約数和(自身を除く): 748860

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, 809, 1618, 2427, 3236, 4045, 4854, 5663, 8090, 9708, 11326, 12135, 16180, 16989, 22652, 24270, 28315, 33978, 48540, 56630, 67956, 84945, 113260, 169890, 339780]

約数ペア:

[(1, 339780), (2, 169890), (3, 113260), (4, 84945), (5, 67956), (6, 56630), (7, 48540), (10, 33978), (12, 28315), (14, 24270), (15, 22652), (20, 16989), (21, 16180), (28, 12135), (30, 11326), (35, 9708), (42, 8090), (60, 5663), (70, 4854), (84, 4045), (105, 3236), (140, 2427), (210, 1618), (420, 809)]