66495280

素因数分解:

$2^4\times 5^1\times {\mathrm{831191}}^1$

素因数の和:831204

約数の個数: 20

約数和(自身を含む): 154601712

約数和(自身を除く): 88106432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 831191, 1662382, 3324764, 4155955, 6649528, 8311910, 13299056, 16623820, 33247640, 66495280]

約数ペア:

[(1, 66495280), (2, 33247640), (4, 16623820), (5, 13299056), (8, 8311910), (10, 6649528), (16, 4155955), (20, 3324764), (40, 1662382), (80, 831191)]