20883668

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30893}}^1$

素因数の和:30923

約数の個数: 18

約数和(自身を含む): 39575214

約数和(自身を除く): 18691546

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30893, 61786, 123572, 401609, 803218, 1606436, 5220917, 10441834, 20883668]

約数ペア:

[(1, 20883668), (2, 10441834), (4, 5220917), (13, 1606436), (26, 803218), (52, 401609), (169, 123572), (338, 61786), (676, 30893)]