20400356

素因数分解:

$2^2\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:392

約数の個数: 36

約数和(自身を含む): 38648064

約数和(自身を除く): 18247708

約数列:

[1, 2, 4, 23, 31, 46, 62, 92, 124, 311, 529, 622, 713, 1058, 1244, 1426, 2116, 2852, 7153, 9641, 14306, 16399, 19282, 28612, 32798, 38564, 65596, 164519, 221743, 329038, 443486, 658076, 886972, 5100089, 10200178, 20400356]

約数ペア:

[(1, 20400356), (2, 10200178), (4, 5100089), (23, 886972), (31, 658076), (46, 443486), (62, 329038), (92, 221743), (124, 164519), (311, 65596), (529, 38564), (622, 32798), (713, 28612), (1058, 19282), (1244, 16399), (1426, 14306), (2116, 9641), (2852, 7153)]