213969905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{81203}}^1$

素因数の和:81256

約数の個数: 16

約数和(自身を含む): 280641024

約数和(自身を除く): 66671119

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 81203, 406015, 1380451, 2517293, 6902255, 12586465, 42793981, 213969905]

約数ペア:

[(1, 213969905), (5, 42793981), (17, 12586465), (31, 6902255), (85, 2517293), (155, 1380451), (527, 406015), (2635, 81203)]