20891541

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{4621}}^1$

素因数の和:4772

約数の個数: 16

約数和(自身を含む): 30616128

約数和(自身を除く): 9724587

約数列:

[1, 3, 11, 33, 137, 411, 1507, 4521, 4621, 13863, 50831, 152493, 633077, 1899231, 6963847, 20891541]

約数ペア:

[(1, 20891541), (3, 6963847), (11, 1899231), (33, 633077), (137, 152493), (411, 50831), (1507, 13863), (4521, 4621)]