20705464

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{757}}^1$

素因数の和:1039

約数の個数: 32

約数和(自身を含む): 42023520

約数和(自身を除く): 21318056

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 263, 526, 757, 1052, 1514, 2104, 3028, 3419, 6056, 6838, 9841, 13676, 19682, 27352, 39364, 78728, 199091, 398182, 796364, 1592728, 2588183, 5176366, 10352732, 20705464]

約数ペア:

[(1, 20705464), (2, 10352732), (4, 5176366), (8, 2588183), (13, 1592728), (26, 796364), (52, 398182), (104, 199091), (263, 78728), (526, 39364), (757, 27352), (1052, 19682), (1514, 13676), (2104, 9841), (3028, 6838), (3419, 6056)]