20298978

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{647}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31955742

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 83, 126, 166, 189, 249, 378, 498, 581, 647, 747, 1162, 1294, 1494, 1743, 1941, 2241, 3486, 3882, 4482, 4529, 5229, 5823, 9058, 10458, 11646, 13587, 15687, 17469, 27174, 31374, 34938, 40761, 53701, 81522, 107402, 122283, 161103, 244566, 322206, 375907, 483309, 751814, 966618, 1127721, 1449927, 2255442, 2899854, 3383163, 6766326, 10149489, 20298978]

約数ペア:

[(1, 20298978), (2, 10149489), (3, 6766326), (6, 3383163), (7, 2899854), (9, 2255442), (14, 1449927), (18, 1127721), (21, 966618), (27, 751814), (42, 483309), (54, 375907), (63, 322206), (83, 244566), (126, 161103), (166, 122283), (189, 107402), (249, 81522), (378, 53701), (498, 40761), (581, 34938), (647, 31374), (747, 27174), (1162, 17469), (1294, 15687), (1494, 13587), (1743, 11646), (1941, 10458), (2241, 9058), (3486, 5823), (3882, 5229), (4482, 4529)]