87720415

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{1621}}^1$

素因数の和:1842

約数の個数: 16

約数和(自身を含む): 107441280

約数和(自身を除く): 19720865

約数列:

[1, 5, 79, 137, 395, 685, 1621, 8105, 10823, 54115, 128059, 222077, 640295, 1110385, 17544083, 87720415]

約数ペア:

[(1, 87720415), (5, 17544083), (79, 1110385), (137, 640295), (395, 222077), (685, 128059), (1621, 54115), (8105, 10823)]