81001415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{20743}}^1$

素因数の和:20830

約数の個数: 16

約数和(自身を含む): 107536896

約数和(自身を除く): 26535481

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 20743, 103715, 228173, 1140865, 1472753, 7363765, 16200283, 81001415]

約数ペア:

[(1, 81001415), (5, 16200283), (11, 7363765), (55, 1472753), (71, 1140865), (355, 228173), (781, 103715), (3905, 20743)]