21181820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{96281}}^1$

素因数の和:96301

約数の個数: 24

約数和(自身を含む): 48526128

約数和(自身を除く): 27344308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 96281, 192562, 385124, 481405, 962810, 1059091, 1925620, 2118182, 4236364, 5295455, 10590910, 21181820]

約数ペア:

[(1, 21181820), (2, 10590910), (4, 5295455), (5, 4236364), (10, 2118182), (11, 1925620), (20, 1059091), (22, 962810), (44, 481405), (55, 385124), (110, 192562), (220, 96281)]