21447452

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31727}}^1$

素因数の和:31757

約数の個数: 18

約数和(自身を含む): 40643568

約数和(自身を除く): 19196116

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31727, 63454, 126908, 412451, 824902, 1649804, 5361863, 10723726, 21447452]

約数ペア:

[(1, 21447452), (2, 10723726), (4, 5361863), (13, 1649804), (26, 824902), (52, 412451), (169, 126908), (338, 63454), (676, 31727)]