128336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:638

約数の個数: 20

約数和(自身を含む): 268212

約数和(自身を除く): 139876

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 617, 1234, 2468, 4936, 8021, 9872, 16042, 32084, 64168, 128336]

約数ペア:

[(1, 128336), (2, 64168), (4, 32084), (8, 16042), (13, 9872), (16, 8021), (26, 4936), (52, 2468), (104, 1234), (208, 617)]