20404947

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7549}}^1$

素因数の和:7622

約数の個数: 16

約数和(自身を含む): 29354400

約数和(自身を除く): 8949453

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7549, 22647, 128333, 384999, 400097, 1200291, 6801649, 20404947]

約数ペア:

[(1, 20404947), (3, 6801649), (17, 1200291), (51, 400097), (53, 384999), (159, 128333), (901, 22647), (2703, 7549)]