81856112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393539}}^1$

素因数の和:393560

約数の個数: 20

約数和(自身を含む): 170796360

約数和(自身を除く): 88940248

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393539, 787078, 1574156, 3148312, 5116007, 6296624, 10232014, 20464028, 40928056, 81856112]

約数ペア:

[(1, 81856112), (2, 40928056), (4, 20464028), (8, 10232014), (13, 6296624), (16, 5116007), (26, 3148312), (52, 1574156), (104, 787078), (208, 393539)]