51779419280

素因数分解:

$2^4\times 5^1\times {\mathrm{647242741}}^1$

素因数の和:647242754

約数の個数: 20

約数和(自身を含む): 120387150012

約数和(自身を除く): 68607730732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647242741, 1294485482, 2588970964, 3236213705, 5177941928, 6472427410, 10355883856, 12944854820, 25889709640, 51779419280]

約数ペア:

[(1, 51779419280), (2, 25889709640), (4, 12944854820), (5, 10355883856), (8, 6472427410), (10, 5177941928), (16, 3236213705), (20, 2588970964), (40, 1294485482), (80, 647242741)]