20995816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{587}}^1$

素因数の和:873

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20916824

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 263, 526, 587, 1052, 1174, 2104, 2348, 4471, 4696, 8942, 9979, 17884, 19958, 35768, 39916, 79832, 154381, 308762, 617524, 1235048, 2624477, 5248954, 10497908, 20995816]

約数ペア:

[(1, 20995816), (2, 10497908), (4, 5248954), (8, 2624477), (17, 1235048), (34, 617524), (68, 308762), (136, 154381), (263, 79832), (526, 39916), (587, 35768), (1052, 19958), (1174, 17884), (2104, 9979), (2348, 8942), (4471, 4696)]