221428532

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{327557}}^1$

素因数の和:327587

約数の個数: 18

約数和(自身を含む): 419601798

約数和(自身を除く): 198173266

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 327557, 655114, 1310228, 4258241, 8516482, 17032964, 55357133, 110714266, 221428532]

約数ペア:

[(1, 221428532), (2, 110714266), (4, 55357133), (13, 17032964), (26, 8516482), (52, 4258241), (169, 1310228), (338, 655114), (676, 327557)]