20578019

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1493}}^1$

素因数の和:1690

約数の個数: 16

約数和(自身を含む): 25816320

約数和(自身を除く): 5238301

約数列:

[1, 7, 11, 77, 179, 1253, 1493, 1969, 10451, 13783, 16423, 114961, 267247, 1870729, 2939717, 20578019]

約数ペア:

[(1, 20578019), (7, 2939717), (11, 1870729), (77, 267247), (179, 114961), (1253, 16423), (1493, 13783), (1969, 10451)]