20897607

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4057}}^1$

素因数の和:4178

約数の個数: 16

約数和(自身を含む): 29801952

約数和(自身を除く): 8904345

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4057, 5151, 12171, 68969, 206907, 409757, 1229271, 6965869, 20897607]

約数ペア:

[(1, 20897607), (3, 6965869), (17, 1229271), (51, 409757), (101, 206907), (303, 68969), (1717, 12171), (4057, 5151)]