81489687568

素因数分解:

$2^4\times {\mathrm{439}}^1\times {\mathrm{11601607}}^1$

素因数の和:11602054

約数の個数: 20

約数和(自身を含む): 158245933120

約数和(自身を除く): 76756245552

約数列:

[1, 2, 4, 8, 16, 439, 878, 1756, 3512, 7024, 11601607, 23203214, 46406428, 92812856, 185625712, 5093105473, 10186210946, 20372421892, 40744843784, 81489687568]

約数ペア:

[(1, 81489687568), (2, 40744843784), (4, 20372421892), (8, 10186210946), (16, 5093105473), (439, 185625712), (878, 92812856), (1756, 46406428), (3512, 23203214), (7024, 11601607)]