21401982

素因数分解:

$2^1\times 3^8\times 7^1\times {\mathrm{233}}^1$

素因数の和:266

約数の個数: 72

約数和(自身を含む): 55267056

約数和(自身を除く): 33865074

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 233, 243, 378, 466, 486, 567, 699, 729, 1134, 1398, 1458, 1631, 1701, 2097, 2187, 3262, 3402, 4194, 4374, 4893, 5103, 6291, 6561, 9786, 10206, 12582, 13122, 14679, 15309, 18873, 29358, 30618, 37746, 44037, 45927, 56619, 88074, 91854, 113238, 132111, 169857, 264222, 339714, 396333, 509571, 792666, 1019142, 1188999, 1528713, 2377998, 3057426, 3566997, 7133994, 10700991, 21401982]

約数ペア:

[(1, 21401982), (2, 10700991), (3, 7133994), (6, 3566997), (7, 3057426), (9, 2377998), (14, 1528713), (18, 1188999), (21, 1019142), (27, 792666), (42, 509571), (54, 396333), (63, 339714), (81, 264222), (126, 169857), (162, 132111), (189, 113238), (233, 91854), (243, 88074), (378, 56619), (466, 45927), (486, 44037), (567, 37746), (699, 30618), (729, 29358), (1134, 18873), (1398, 15309), (1458, 14679), (1631, 13122), (1701, 12582), (2097, 10206), (2187, 9786), (3262, 6561), (3402, 6291), (4194, 5103), (4374, 4893)]