198609905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71059}}^1$

素因数の和:71120

約数の個数: 16

約数和(自身を含む): 262637760

約数和(自身を除く): 64027855

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 71059, 355295, 923767, 3055537, 4618835, 15277685, 39721981, 198609905]

約数ペア:

[(1, 198609905), (5, 39721981), (13, 15277685), (43, 4618835), (65, 3055537), (215, 923767), (559, 355295), (2795, 71059)]