21140470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1187}}^1$

素因数の和:1344

約数の個数: 32

約数和(自身を含む): 41313888

約数和(自身を除く): 20173418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 137, 274, 685, 1187, 1370, 1781, 2374, 3562, 5935, 8905, 11870, 15431, 17810, 30862, 77155, 154310, 162619, 325238, 813095, 1626190, 2114047, 4228094, 10570235, 21140470]

約数ペア:

[(1, 21140470), (2, 10570235), (5, 4228094), (10, 2114047), (13, 1626190), (26, 813095), (65, 325238), (130, 162619), (137, 154310), (274, 77155), (685, 30862), (1187, 17810), (1370, 15431), (1781, 11870), (2374, 8905), (3562, 5935)]