216156787

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{21107}}^1$

素因数の和:21151

約数の個数: 24

約数和(自身を含む): 288757440

約数和(自身を除く): 72600653

約数列:

[1, 7, 11, 19, 49, 77, 133, 209, 539, 931, 1463, 10241, 21107, 147749, 232177, 401033, 1034243, 1625239, 2807231, 4411363, 11376673, 19650617, 30879541, 216156787]

約数ペア:

[(1, 216156787), (7, 30879541), (11, 19650617), (19, 11376673), (49, 4411363), (77, 2807231), (133, 1625239), (209, 1034243), (539, 401033), (931, 232177), (1463, 147749), (10241, 21107)]