81981905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{10837}}^1$

素因数の和:10948

約数の個数: 16

約数和(自身を含む): 105345360

約数和(自身を除く): 23363455

約数列:

[1, 5, 17, 85, 89, 445, 1513, 7565, 10837, 54185, 184229, 921145, 964493, 4822465, 16396381, 81981905]

約数ペア:

[(1, 81981905), (5, 16396381), (17, 4822465), (85, 964493), (89, 921145), (445, 184229), (1513, 54185), (7565, 10837)]