21094515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 39862368

約数和(自身を除く): 18767853

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 107, 117, 195, 321, 337, 535, 585, 963, 1011, 1391, 1605, 1685, 3033, 4173, 4381, 4815, 5055, 6955, 12519, 13143, 15165, 20865, 21905, 36059, 39429, 62595, 65715, 108177, 180295, 197145, 324531, 468767, 540885, 1406301, 1622655, 2343835, 4218903, 7031505, 21094515]

約数ペア:

[(1, 21094515), (3, 7031505), (5, 4218903), (9, 2343835), (13, 1622655), (15, 1406301), (39, 540885), (45, 468767), (65, 324531), (107, 197145), (117, 180295), (195, 108177), (321, 65715), (337, 62595), (535, 39429), (585, 36059), (963, 21905), (1011, 20865), (1391, 15165), (1605, 13143), (1685, 12519), (3033, 6955), (4173, 5055), (4381, 4815)]