21089061218

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{670729}}^1$

素因数の和:671009

約数の個数: 16

約数和(自身を含む): 32195040000

約数和(自身を除く): 11105978782

約数列:

[1, 2, 79, 158, 199, 398, 15721, 31442, 670729, 1341458, 52987591, 105975182, 133475071, 266950142, 10544530609, 21089061218]

約数ペア:

[(1, 21089061218), (2, 10544530609), (79, 266950142), (158, 133475071), (199, 105975182), (398, 52987591), (15721, 1341458), (31442, 670729)]