21240198

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{677}}^1$

素因数の和:778

約数の個数: 64

約数和(自身を含む): 54673920

約数和(自身を除く): 33433722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 83, 126, 166, 189, 249, 378, 498, 581, 677, 747, 1162, 1354, 1494, 1743, 2031, 2241, 3486, 4062, 4482, 4739, 5229, 6093, 9478, 10458, 12186, 14217, 15687, 18279, 28434, 31374, 36558, 42651, 56191, 85302, 112382, 127953, 168573, 255906, 337146, 393337, 505719, 786674, 1011438, 1180011, 1517157, 2360022, 3034314, 3540033, 7080066, 10620099, 21240198]

約数ペア:

[(1, 21240198), (2, 10620099), (3, 7080066), (6, 3540033), (7, 3034314), (9, 2360022), (14, 1517157), (18, 1180011), (21, 1011438), (27, 786674), (42, 505719), (54, 393337), (63, 337146), (83, 255906), (126, 168573), (166, 127953), (189, 112382), (249, 85302), (378, 56191), (498, 42651), (581, 36558), (677, 31374), (747, 28434), (1162, 18279), (1354, 15687), (1494, 14217), (1743, 12186), (2031, 10458), (2241, 9478), (3486, 6093), (4062, 5229), (4482, 4739)]