19998407511

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{76622251}}^1$

素因数の和:76622286

約数の個数: 12

約数和(自身を含む): 29882678280

約数和(自身を除く): 9884270769

約数列:

[1, 3, 9, 29, 87, 261, 76622251, 229866753, 689600259, 2222045279, 6666135837, 19998407511]

約数ペア:

[(1, 19998407511), (3, 6666135837), (9, 2222045279), (29, 689600259), (87, 229866753), (261, 76622251)]