21538484

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44501}}^1$

素因数の和:44527

約数の個数: 18

約数和(自身を含む): 41431362

約数和(自身を除く): 19892878

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44501, 89002, 178004, 489511, 979022, 1958044, 5384621, 10769242, 21538484]

約数ペア:

[(1, 21538484), (2, 10769242), (4, 5384621), (11, 1958044), (22, 979022), (44, 489511), (121, 178004), (242, 89002), (484, 44501)]