21365080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{823}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 53395200

約数和(自身を除く): 32030120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 823, 1180, 1298, 1646, 2360, 2596, 3245, 3292, 4115, 5192, 6490, 6584, 8230, 9053, 12980, 16460, 18106, 25960, 32920, 36212, 45265, 48557, 72424, 90530, 97114, 181060, 194228, 242785, 362120, 388456, 485570, 534127, 971140, 1068254, 1942280, 2136508, 2670635, 4273016, 5341270, 10682540, 21365080]

約数ペア:

[(1, 21365080), (2, 10682540), (4, 5341270), (5, 4273016), (8, 2670635), (10, 2136508), (11, 1942280), (20, 1068254), (22, 971140), (40, 534127), (44, 485570), (55, 388456), (59, 362120), (88, 242785), (110, 194228), (118, 181060), (220, 97114), (236, 90530), (295, 72424), (440, 48557), (472, 45265), (590, 36212), (649, 32920), (823, 25960), (1180, 18106), (1298, 16460), (1646, 12980), (2360, 9053), (2596, 8230), (3245, 6584), (3292, 6490), (4115, 5192)]