81021955

素因数分解:

$5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{13381}}^1$

素因数の和:13566

約数の個数: 16

約数和(自身を含む): 111766464

約数和(自身を除く): 30744509

約数列:

[1, 5, 7, 35, 173, 865, 1211, 6055, 13381, 66905, 93667, 468335, 2314913, 11574565, 16204391, 81021955]

約数ペア:

[(1, 81021955), (5, 16204391), (7, 11574565), (35, 2314913), (173, 468335), (865, 93667), (1211, 66905), (6055, 13381)]