81478978

素因数分解:

$2^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{22129}}^1$

素因数の和:22401

約数の個数: 16

約数和(自身を含む): 140215680

約数和(自身を除く): 58736702

約数列:

[1, 2, 7, 14, 263, 526, 1841, 3682, 22129, 44258, 154903, 309806, 5819927, 11639854, 40739489, 81478978]

約数ペア:

[(1, 81478978), (2, 40739489), (7, 11639854), (14, 5819927), (263, 309806), (526, 154903), (1841, 44258), (3682, 22129)]