20555400383

素因数分解:

$7^4\times {\mathrm{17}}^1\times {\mathrm{503599}}^1$

素因数の和:503644

約数の個数: 20

約数和(自身を含む): 25390504800

約数和(自身を除く): 4835104417

約数列:

[1, 7, 17, 49, 119, 343, 833, 2401, 5831, 40817, 503599, 3525193, 8561183, 24676351, 59928281, 172734457, 419497967, 1209141199, 2936485769, 20555400383]

約数ペア:

[(1, 20555400383), (7, 2936485769), (17, 1209141199), (49, 419497967), (119, 172734457), (343, 59928281), (833, 24676351), (2401, 8561183), (5831, 3525193), (40817, 503599)]