668660

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{499}}^1$

素因数の和:575

約数の個数: 24

約数和(自身を含む): 1428000

約数和(自身を除く): 759340

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 499, 670, 998, 1340, 1996, 2495, 4990, 9980, 33433, 66866, 133732, 167165, 334330, 668660]

約数ペア:

[(1, 668660), (2, 334330), (4, 167165), (5, 133732), (10, 66866), (20, 33433), (67, 9980), (134, 4990), (268, 2495), (335, 1996), (499, 1340), (670, 998)]