81270665

素因数分解:

$5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{4951}}^1$

素因数の和:5037

約数の個数: 24

約数和(自身を含む): 115163712

約数和(自身を除く): 33893047

約数列:

[1, 5, 7, 35, 49, 67, 245, 335, 469, 2345, 3283, 4951, 16415, 24755, 34657, 173285, 242599, 331717, 1212995, 1658585, 2322019, 11610095, 16254133, 81270665]

約数ペア:

[(1, 81270665), (5, 16254133), (7, 11610095), (35, 2322019), (49, 1658585), (67, 1212995), (245, 331717), (335, 242599), (469, 173285), (2345, 34657), (3283, 24755), (4951, 16415)]