19493221

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 23088800

約数和(自身を除く): 3595579

約数列:

[1, 11, 19, 61, 121, 139, 209, 671, 1159, 1529, 2299, 2641, 7381, 8479, 12749, 16819, 29051, 93269, 140239, 161101, 319561, 1025959, 1772111, 19493221]

約数ペア:

[(1, 19493221), (11, 1772111), (19, 1025959), (61, 319561), (121, 161101), (139, 140239), (209, 93269), (671, 29051), (1159, 16819), (1529, 12749), (2299, 8479), (2641, 7381)]