18887979

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{853}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 28168336

約数和(自身を除く): 9280357

約数列:

[1, 3, 11, 33, 61, 121, 183, 363, 671, 853, 2013, 2559, 7381, 9383, 22143, 28149, 52033, 103213, 156099, 309639, 572363, 1717089, 6295993, 18887979]

約数ペア:

[(1, 18887979), (3, 6295993), (11, 1717089), (33, 572363), (61, 309639), (121, 156099), (183, 103213), (363, 52033), (671, 28149), (853, 22143), (2013, 9383), (2559, 7381)]