20680556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{797}}^1$

素因数の和:1313

約数の個数: 24

約数和(自身を含む): 39102000

約数和(自身を除く): 18421444

約数列:

[1, 2, 4, 13, 26, 52, 499, 797, 998, 1594, 1996, 3188, 6487, 10361, 12974, 20722, 25948, 41444, 397703, 795406, 1590812, 5170139, 10340278, 20680556]

約数ペア:

[(1, 20680556), (2, 10340278), (4, 5170139), (13, 1590812), (26, 795406), (52, 397703), (499, 41444), (797, 25948), (998, 20722), (1594, 12974), (1996, 10361), (3188, 6487)]