21097923

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 38916864

約数和(自身を除く): 17818941

約数列:

[1, 3, 7, 11, 19, 21, 23, 33, 57, 69, 77, 121, 133, 161, 209, 231, 253, 361, 363, 399, 437, 483, 627, 759, 847, 1083, 1311, 1463, 1771, 2299, 2527, 2541, 2783, 3059, 3971, 4389, 4807, 5313, 6897, 7581, 8303, 8349, 9177, 11913, 14421, 16093, 19481, 24909, 27797, 33649, 43681, 48279, 52877, 58121, 58443, 83391, 91333, 100947, 131043, 158631, 174363, 273999, 305767, 370139, 639331, 917301, 1004663, 1110417, 1917993, 3013989, 7032641, 21097923]

約数ペア:

[(1, 21097923), (3, 7032641), (7, 3013989), (11, 1917993), (19, 1110417), (21, 1004663), (23, 917301), (33, 639331), (57, 370139), (69, 305767), (77, 273999), (121, 174363), (133, 158631), (161, 131043), (209, 100947), (231, 91333), (253, 83391), (361, 58443), (363, 58121), (399, 52877), (437, 48279), (483, 43681), (627, 33649), (759, 27797), (847, 24909), (1083, 19481), (1311, 16093), (1463, 14421), (1771, 11913), (2299, 9177), (2527, 8349), (2541, 8303), (2783, 7581), (3059, 6897), (3971, 5313), (4389, 4807)]