64611320

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{8117}}^1$

素因数の和:8327

約数の個数: 32

約数和(自身を含む): 146124000

約数和(自身を除く): 81512680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 8117, 16234, 32468, 40585, 64936, 81170, 162340, 324680, 1615283, 3230566, 6461132, 8076415, 12922264, 16152830, 32305660, 64611320]

約数ペア:

[(1, 64611320), (2, 32305660), (4, 16152830), (5, 12922264), (8, 8076415), (10, 6461132), (20, 3230566), (40, 1615283), (199, 324680), (398, 162340), (796, 81170), (995, 64936), (1592, 40585), (1990, 32468), (3980, 16234), (7960, 8117)]