80889328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{388891}}^1$

素因数の和:388912

約数の個数: 20

約数和(自身を含む): 168779128

約数和(自身を除く): 87889800

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 388891, 777782, 1555564, 3111128, 5055583, 6222256, 10111166, 20222332, 40444664, 80889328]

約数ペア:

[(1, 80889328), (2, 40444664), (4, 20222332), (8, 10111166), (13, 6222256), (16, 5055583), (26, 3111128), (52, 1555564), (104, 777782), (208, 388891)]