21247848

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{6863}}^1$

素因数の和:6918

約数の個数: 48

約数和(自身を含む): 58893120

約数和(自身を除く): 37645272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 172, 258, 344, 387, 516, 774, 1032, 1548, 3096, 6863, 13726, 20589, 27452, 41178, 54904, 61767, 82356, 123534, 164712, 247068, 295109, 494136, 590218, 885327, 1180436, 1770654, 2360872, 2655981, 3541308, 5311962, 7082616, 10623924, 21247848]

約数ペア:

[(1, 21247848), (2, 10623924), (3, 7082616), (4, 5311962), (6, 3541308), (8, 2655981), (9, 2360872), (12, 1770654), (18, 1180436), (24, 885327), (36, 590218), (43, 494136), (72, 295109), (86, 247068), (129, 164712), (172, 123534), (258, 82356), (344, 61767), (387, 54904), (516, 41178), (774, 27452), (1032, 20589), (1548, 13726), (3096, 6863)]