66670864

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320533}}^1$

素因数の和:320554

約数の個数: 20

約数和(自身を含む): 139111756

約数和(自身を除く): 72440892

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320533, 641066, 1282132, 2564264, 4166929, 5128528, 8333858, 16667716, 33335432, 66670864]

約数ペア:

[(1, 66670864), (2, 33335432), (4, 16667716), (8, 8333858), (13, 5128528), (16, 4166929), (26, 2564264), (52, 1282132), (104, 641066), (208, 320533)]