139720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{499}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 360000

約数和(自身を除く): 220280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 499, 998, 1996, 2495, 3493, 3992, 4990, 6986, 9980, 13972, 17465, 19960, 27944, 34930, 69860, 139720]

約数ペア:

[(1, 139720), (2, 69860), (4, 34930), (5, 27944), (7, 19960), (8, 17465), (10, 13972), (14, 9980), (20, 6986), (28, 4990), (35, 3992), (40, 3493), (56, 2495), (70, 1996), (140, 998), (280, 499)]