81067792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{389749}}^1$

素因数の和:389770

約数の個数: 20

約数和(自身を含む): 169151500

約数和(自身を除く): 88083708

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 389749, 779498, 1558996, 3117992, 5066737, 6235984, 10133474, 20266948, 40533896, 81067792]

約数ペア:

[(1, 81067792), (2, 40533896), (4, 20266948), (8, 10133474), (13, 6235984), (16, 5066737), (26, 3117992), (52, 1558996), (104, 779498), (208, 389749)]