20798907805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1063}}^1\times {\mathrm{17707}}^1$

素因数の和:18805

約数の個数: 32

約数和(自身を含む): 28488063744

約数和(自身を除く): 7689155939

約数列:

[1, 5, 13, 17, 65, 85, 221, 1063, 1105, 5315, 13819, 17707, 18071, 69095, 88535, 90355, 230191, 234923, 301019, 1150955, 1174615, 1505095, 3913247, 18822541, 19566235, 94112705, 244693033, 319983197, 1223465165, 1599915985, 4159781561, 20798907805]

約数ペア:

[(1, 20798907805), (5, 4159781561), (13, 1599915985), (17, 1223465165), (65, 319983197), (85, 244693033), (221, 94112705), (1063, 19566235), (1105, 18822541), (5315, 3913247), (13819, 1505095), (17707, 1174615), (18071, 1150955), (69095, 301019), (88535, 234923), (90355, 230191)]