20928196796

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30958871}}^1$

素因数の和:30958901

約数の個数: 18

約数和(自身を含む): 39658315032

約数和(自身を除く): 18730118236

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30958871, 61917742, 123835484, 402465323, 804930646, 1609861292, 5232049199, 10464098398, 20928196796]

約数ペア:

[(1, 20928196796), (2, 10464098398), (4, 5232049199), (13, 1609861292), (26, 804930646), (52, 402465323), (169, 123835484), (338, 61917742), (676, 30958871)]