81215810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{624737}}^1$

素因数の和:624757

約数の個数: 16

約数和(自身を含む): 157433976

約数和(自身を除く): 76218166

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 624737, 1249474, 3123685, 6247370, 8121581, 16243162, 40607905, 81215810]

約数ペア:

[(1, 81215810), (2, 40607905), (5, 16243162), (10, 8121581), (13, 6247370), (26, 3123685), (65, 1249474), (130, 624737)]