81408385

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{4751}}^1$

素因数の和:4928

約数の個数: 16

約数和(自身を含む): 102643200

約数和(自身を除く): 21234815

約数列:

[1, 5, 23, 115, 149, 745, 3427, 4751, 17135, 23755, 109273, 546365, 707899, 3539495, 16281677, 81408385]

約数ペア:

[(1, 81408385), (5, 16281677), (23, 3539495), (115, 707899), (149, 546365), (745, 109273), (3427, 23755), (4751, 17135)]