18219747

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{66739}}^1$

素因数の和:66762

約数の個数: 16

約数和(自身を含む): 29899520

約数和(自身を除く): 11679773

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 66739, 200217, 467173, 867607, 1401519, 2602821, 6073249, 18219747]

約数ペア:

[(1, 18219747), (3, 6073249), (7, 2602821), (13, 1401519), (21, 867607), (39, 467173), (91, 200217), (273, 66739)]