20515378

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{4561}}^1$

素因数の和:4749

約数の個数: 16

約数和(自身を含む): 33339096

約数和(自身を除く): 12823718

約数列:

[1, 2, 13, 26, 173, 346, 2249, 4498, 4561, 9122, 59293, 118586, 789053, 1578106, 10257689, 20515378]

約数ペア:

[(1, 20515378), (2, 10257689), (13, 1578106), (26, 789053), (173, 118586), (346, 59293), (2249, 9122), (4498, 4561)]