18886851

素因数分解:

$3^4\times {\mathrm{431}}^1\times {\mathrm{541}}^1$

素因数の和:984

約数の個数: 20

約数和(自身を含む): 28331424

約数和(自身を除く): 9444573

約数列:

[1, 3, 9, 27, 81, 431, 541, 1293, 1623, 3879, 4869, 11637, 14607, 34911, 43821, 233171, 699513, 2098539, 6295617, 18886851]

約数ペア:

[(1, 18886851), (3, 6295617), (9, 2098539), (27, 699513), (81, 233171), (431, 43821), (541, 34911), (1293, 14607), (1623, 11637), (3879, 4869)]