689481

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 24

約数和(自身を含む): 1100736

約数和(自身を除く): 411255

約数列:

[1, 3, 9, 13, 39, 71, 83, 117, 213, 249, 639, 747, 923, 1079, 2769, 3237, 5893, 8307, 9711, 17679, 53037, 76609, 229827, 689481]

約数ペア:

[(1, 689481), (3, 229827), (9, 76609), (13, 53037), (39, 17679), (71, 9711), (83, 8307), (117, 5893), (213, 3237), (249, 2769), (639, 1079), (747, 923)]