137480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{491}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 354240

約数和(自身を除く): 216760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 491, 982, 1964, 2455, 3437, 3928, 4910, 6874, 9820, 13748, 17185, 19640, 27496, 34370, 68740, 137480]

約数ペア:

[(1, 137480), (2, 68740), (4, 34370), (5, 27496), (7, 19640), (8, 17185), (10, 13748), (14, 9820), (20, 6874), (28, 4910), (35, 3928), (40, 3437), (56, 2455), (70, 1964), (140, 982), (280, 491)]