81761584

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{40237}}^1$

素因数の和:40372

約数の個数: 20

約数和(自身を含む): 159664384

約数和(自身を除く): 77902800

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 40237, 80474, 160948, 321896, 643792, 5110099, 10220198, 20440396, 40880792, 81761584]

約数ペア:

[(1, 81761584), (2, 40880792), (4, 20440396), (8, 10220198), (16, 5110099), (127, 643792), (254, 321896), (508, 160948), (1016, 80474), (2032, 40237)]