28136420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108217}}^1$

素因数の和:108239

約数の個数: 24

約数和(自身を含む): 63632184

約数和(自身を除く): 35495764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108217, 216434, 432868, 541085, 1082170, 1406821, 2164340, 2813642, 5627284, 7034105, 14068210, 28136420]

約数ペア:

[(1, 28136420), (2, 14068210), (4, 7034105), (5, 5627284), (10, 2813642), (13, 2164340), (20, 1406821), (26, 1082170), (52, 541085), (65, 432868), (130, 216434), (260, 108217)]