128891902

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{5309}}^1$

素因数の和:5571

約数の個数: 16

約数和(自身を含む): 197532000

約数和(自身を除く): 68640098

約数列:

[1, 2, 61, 122, 199, 398, 5309, 10618, 12139, 24278, 323849, 647698, 1056491, 2112982, 64445951, 128891902]

約数ペア:

[(1, 128891902), (2, 64445951), (61, 2112982), (122, 1056491), (199, 647698), (398, 323849), (5309, 24278), (10618, 12139)]