66777776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{321047}}^1$

素因数の和:321068

約数の個数: 20

約数和(自身を含む): 139334832

約数和(自身を除く): 72557056

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 321047, 642094, 1284188, 2568376, 4173611, 5136752, 8347222, 16694444, 33388888, 66777776]

約数ペア:

[(1, 66777776), (2, 33388888), (4, 16694444), (8, 8347222), (13, 5136752), (16, 4173611), (26, 2568376), (52, 1284188), (104, 642094), (208, 321047)]