168189903

素因数分解:

$3^2\times 7^2\times {\mathrm{381383}}^1$

素因数の和:381403

約数の個数: 18

約数和(自身を含む): 282605544

約数和(自身を除く): 114415641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 381383, 1144149, 2669681, 3432447, 8009043, 18687767, 24027129, 56063301, 168189903]

約数ペア:

[(1, 168189903), (3, 56063301), (7, 24027129), (9, 18687767), (21, 8009043), (49, 3432447), (63, 2669681), (147, 1144149), (441, 381383)]