20661476

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42689}}^1$

素因数の和:42715

約数の個数: 18

約数和(自身を含む): 39744390

約数和(自身を除く): 19082914

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42689, 85378, 170756, 469579, 939158, 1878316, 5165369, 10330738, 20661476]

約数ペア:

[(1, 20661476), (2, 10330738), (4, 5165369), (11, 1878316), (22, 939158), (44, 469579), (121, 170756), (242, 85378), (484, 42689)]