18985868

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{39227}}^1$

素因数の和:39253

約数の個数: 18

約数和(自身を含む): 36521268

約数和(自身を除く): 17535400

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 39227, 78454, 156908, 431497, 862994, 1725988, 4746467, 9492934, 18985868]

約数ペア:

[(1, 18985868), (2, 9492934), (4, 4746467), (11, 1725988), (22, 862994), (44, 431497), (121, 156908), (242, 78454), (484, 39227)]