81557815

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1\times {\mathrm{863}}^1$

素因数の和:1370

約数の個数: 16

約数和(自身を含む): 100590336

約数和(自身を除く): 19032521

約数列:

[1, 5, 41, 205, 461, 863, 2305, 4315, 18901, 35383, 94505, 176915, 397843, 1989215, 16311563, 81557815]

約数ペア:

[(1, 81557815), (5, 16311563), (41, 1989215), (205, 397843), (461, 176915), (863, 94505), (2305, 35383), (4315, 18901)]