12643220

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1427}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 26629344

約数和(自身を除く): 13986124

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1427, 1772, 2215, 2854, 4430, 5708, 7135, 8860, 14270, 28540, 632161, 1264322, 2528644, 3160805, 6321610, 12643220]

約数ペア:

[(1, 12643220), (2, 6321610), (4, 3160805), (5, 2528644), (10, 1264322), (20, 632161), (443, 28540), (886, 14270), (1427, 8860), (1772, 7135), (2215, 5708), (2854, 4430)]