20178153

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10831}}^1$

素因数の和:10866

約数の個数: 20

約数和(自身を含む): 31456128

約数和(自身を除く): 11277975

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10831, 32493, 97479, 249113, 292437, 747339, 877311, 2242017, 6726051, 20178153]

約数ペア:

[(1, 20178153), (3, 6726051), (9, 2242017), (23, 877311), (27, 747339), (69, 292437), (81, 249113), (207, 97479), (621, 32493), (1863, 10831)]