18641907

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12113}}^1$

素因数の和:12144

約数の個数: 20

約数和(自身を含む): 29315880

約数和(自身を除く): 10673973

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12113, 36339, 109017, 230147, 327051, 690441, 981153, 2071323, 6213969, 18641907]

約数ペア:

[(1, 18641907), (3, 6213969), (9, 2071323), (19, 981153), (27, 690441), (57, 327051), (81, 230147), (171, 109017), (513, 36339), (1539, 12113)]