20097987

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{809}}^1$

素因数の和:852

約数の個数: 36

約数和(自身を含む): 33796440

約数和(自身を除く): 13698453

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 507, 637, 809, 1183, 1911, 2427, 3549, 5663, 8281, 10517, 16989, 24843, 31551, 39641, 73619, 118923, 136721, 220857, 410163, 515333, 957047, 1545999, 2871141, 6699329, 20097987]

約数ペア:

[(1, 20097987), (3, 6699329), (7, 2871141), (13, 1545999), (21, 957047), (39, 515333), (49, 410163), (91, 220857), (147, 136721), (169, 118923), (273, 73619), (507, 39641), (637, 31551), (809, 24843), (1183, 16989), (1911, 10517), (2427, 8281), (3549, 5663)]