66807920

素因数分解:

$2^4\times 5^1\times {\mathrm{835099}}^1$

素因数の和:835112

約数の個数: 20

約数和(自身を含む): 155328600

約数和(自身を除く): 88520680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 835099, 1670198, 3340396, 4175495, 6680792, 8350990, 13361584, 16701980, 33403960, 66807920]

約数ペア:

[(1, 66807920), (2, 33403960), (4, 16701980), (5, 13361584), (8, 8350990), (10, 6680792), (16, 4175495), (20, 3340396), (40, 1670198), (80, 835099)]