18907317107

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1297}}^1\times {\mathrm{2549}}^1$

素因数の和:3915

約数の個数: 32

約数和(自身を含む): 23301696000

約数和(自身を除く): 4394378893

約数列:

[1, 7, 19, 43, 133, 301, 817, 1297, 2549, 5719, 9079, 17843, 24643, 48431, 55771, 109607, 172501, 339017, 390397, 767249, 1059649, 2082533, 3306053, 7417543, 14577731, 23142371, 62815007, 142160279, 439705049, 995121953, 2701045301, 18907317107]

約数ペア:

[(1, 18907317107), (7, 2701045301), (19, 995121953), (43, 439705049), (133, 142160279), (301, 62815007), (817, 23142371), (1297, 14577731), (2549, 7417543), (5719, 3306053), (9079, 2082533), (17843, 1059649), (24643, 767249), (48431, 390397), (55771, 339017), (109607, 172501)]