81647380

素因数分解:

$2^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{13933}}^1$

素因数の和:14235

約数の個数: 24

約数和(自身を含む): 172057032

約数和(自身を除く): 90409652

約数列:

[1, 2, 4, 5, 10, 20, 293, 586, 1172, 1465, 2930, 5860, 13933, 27866, 55732, 69665, 139330, 278660, 4082369, 8164738, 16329476, 20411845, 40823690, 81647380]

約数ペア:

[(1, 81647380), (2, 40823690), (4, 20411845), (5, 16329476), (10, 8164738), (20, 4082369), (293, 278660), (586, 139330), (1172, 69665), (1465, 55732), (2930, 27866), (5860, 13933)]