27781401

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21191}}^1$

素因数の和:21236

約数の個数: 16

約数和(自身を含む): 40688640

約数和(自身を除く): 12907239

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 21191, 63573, 402629, 487393, 1207887, 1462179, 9260467, 27781401]

約数ペア:

[(1, 27781401), (3, 9260467), (19, 1462179), (23, 1207887), (57, 487393), (69, 402629), (437, 63573), (1311, 21191)]