13071280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1499}}^1$

素因数の和:1621

約数の個数: 40

約数和(自身を含む): 30690000

約数和(自身を除く): 17618720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1499, 1744, 2180, 2998, 4360, 5996, 7495, 8720, 11992, 14990, 23984, 29980, 59960, 119920, 163391, 326782, 653564, 816955, 1307128, 1633910, 2614256, 3267820, 6535640, 13071280]

約数ペア:

[(1, 13071280), (2, 6535640), (4, 3267820), (5, 2614256), (8, 1633910), (10, 1307128), (16, 816955), (20, 653564), (40, 326782), (80, 163391), (109, 119920), (218, 59960), (436, 29980), (545, 23984), (872, 14990), (1090, 11992), (1499, 8720), (1744, 7495), (2180, 5996), (2998, 4360)]