25145721

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{16339}}^1$

素因数の和:16370

約数の個数: 20

約数和(自身を含む): 39542800

約数和(自身を除く): 14397079

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 16339, 49017, 147051, 310441, 441153, 931323, 1323459, 2793969, 8381907, 25145721]

約数ペア:

[(1, 25145721), (3, 8381907), (9, 2793969), (19, 1323459), (27, 931323), (57, 441153), (81, 310441), (171, 147051), (513, 49017), (1539, 16339)]