21261177

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 38645760

約数和(自身を除く): 17384583

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 67, 69, 73, 161, 189, 201, 207, 219, 469, 483, 511, 603, 621, 657, 1407, 1449, 1533, 1541, 1679, 1809, 1971, 4221, 4347, 4599, 4623, 4891, 5037, 10787, 11753, 12663, 13797, 13869, 14673, 15111, 32361, 34237, 35259, 41607, 44019, 45333, 97083, 102711, 105777, 112493, 132057, 291249, 308133, 317331, 337479, 787451, 924399, 1012437, 2362353, 3037311, 7087059, 21261177]

約数ペア:

[(1, 21261177), (3, 7087059), (7, 3037311), (9, 2362353), (21, 1012437), (23, 924399), (27, 787451), (63, 337479), (67, 317331), (69, 308133), (73, 291249), (161, 132057), (189, 112493), (201, 105777), (207, 102711), (219, 97083), (469, 45333), (483, 44019), (511, 41607), (603, 35259), (621, 34237), (657, 32361), (1407, 15111), (1449, 14673), (1533, 13869), (1541, 13797), (1679, 12663), (1809, 11753), (1971, 10787), (4221, 5037), (4347, 4891), (4599, 4623)]