81129215

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{1321}}^1$

素因数の和:1570

約数の個数: 16

約数和(自身を含む): 99372096

約数和(自身を除く): 18242881

約数列:

[1, 5, 71, 173, 355, 865, 1321, 6605, 12283, 61415, 93791, 228533, 468955, 1142665, 16225843, 81129215]

約数ペア:

[(1, 81129215), (5, 16225843), (71, 1142665), (173, 468955), (355, 228533), (865, 93791), (1321, 61415), (6605, 12283)]