20513558

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:608

約数の個数: 24

約数和(自身を含む): 33638328

約数和(自身を除く): 13124770

約数列:

[1, 2, 13, 26, 137, 169, 274, 338, 443, 886, 1781, 3562, 5759, 11518, 23153, 46306, 60691, 74867, 121382, 149734, 788983, 1577966, 10256779, 20513558]

約数ペア:

[(1, 20513558), (2, 10256779), (13, 1577966), (26, 788983), (137, 149734), (169, 121382), (274, 74867), (338, 60691), (443, 46306), (886, 23153), (1781, 11518), (3562, 5759)]