20525319

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 11674233

約数列:

[1, 3, 9, 27, 43, 71, 81, 83, 129, 213, 249, 387, 639, 747, 1161, 1917, 2241, 3053, 3483, 3569, 5751, 5893, 6723, 9159, 10707, 17679, 27477, 32121, 53037, 82431, 96363, 159111, 247293, 253399, 289089, 477333, 760197, 2280591, 6841773, 20525319]

約数ペア:

[(1, 20525319), (3, 6841773), (9, 2280591), (27, 760197), (43, 477333), (71, 289089), (81, 253399), (83, 247293), (129, 159111), (213, 96363), (249, 82431), (387, 53037), (639, 32121), (747, 27477), (1161, 17679), (1917, 10707), (2241, 9159), (3053, 6723), (3483, 5893), (3569, 5751)]