21981567216

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{133241}}^1$

素因数の和:133750

約数の個数: 80

約数和(自身を含む): 65030623488

約数和(自身を除く): 43049056272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 491, 982, 1473, 1964, 2946, 3437, 3928, 5892, 6874, 7856, 10311, 11784, 13748, 20622, 23568, 27496, 41244, 54992, 82488, 133241, 164976, 266482, 399723, 532964, 799446, 932687, 1065928, 1598892, 1865374, 2131856, 2798061, 3197784, 3730748, 5596122, 6395568, 7461496, 11192244, 14922992, 22384488, 44768976, 65421331, 130842662, 196263993, 261685324, 392527986, 457949317, 523370648, 785055972, 915898634, 1046741296, 1373847951, 1570111944, 1831797268, 2747695902, 3140223888, 3663594536, 5495391804, 7327189072, 10990783608, 21981567216]

約数ペア:

[(1, 21981567216), (2, 10990783608), (3, 7327189072), (4, 5495391804), (6, 3663594536), (7, 3140223888), (8, 2747695902), (12, 1831797268), (14, 1570111944), (16, 1373847951), (21, 1046741296), (24, 915898634), (28, 785055972), (42, 523370648), (48, 457949317), (56, 392527986), (84, 261685324), (112, 196263993), (168, 130842662), (336, 65421331), (491, 44768976), (982, 22384488), (1473, 14922992), (1964, 11192244), (2946, 7461496), (3437, 6395568), (3928, 5596122), (5892, 3730748), (6874, 3197784), (7856, 2798061), (10311, 2131856), (11784, 1865374), (13748, 1598892), (20622, 1065928), (23568, 932687), (27496, 799446), (41244, 532964), (54992, 399723), (82488, 266482), (133241, 164976)]