18900459

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12281}}^1$

素因数の和:12312

約数の個数: 20

約数和(自身を含む): 29722440

約数和(自身を除く): 10821981

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12281, 36843, 110529, 233339, 331587, 700017, 994761, 2100051, 6300153, 18900459]

約数ペア:

[(1, 18900459), (3, 6300153), (9, 2100051), (19, 994761), (27, 700017), (57, 331587), (81, 233339), (171, 110529), (513, 36843), (1539, 12281)]