20018515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{3221}}^1$

素因数の和:3350

約数の個数: 16

約数和(自身を含む): 26446176

約数和(自身を除く): 6427661

約数列:

[1, 5, 11, 55, 113, 565, 1243, 3221, 6215, 16105, 35431, 177155, 363973, 1819865, 4003703, 20018515]

約数ペア:

[(1, 20018515), (5, 4003703), (11, 1819865), (55, 363973), (113, 177155), (565, 35431), (1243, 16105), (3221, 6215)]