398889981

素因数分解:

$3^3\times 7^1\times {\mathrm{2110529}}^1$

素因数の和:2110545

約数の個数: 16

約数和(自身を含む): 675369600

約数和(自身を除く): 276479619

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 2110529, 6331587, 14773703, 18994761, 44321109, 56984283, 132963327, 398889981]

約数ペア:

[(1, 398889981), (3, 132963327), (7, 56984283), (9, 44321109), (21, 18994761), (27, 14773703), (63, 6331587), (189, 2110529)]