20859245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19961}}^1$

素因数の和:19996

約数の個数: 16

約数和(自身を含む): 28745280

約数和(自身を除く): 7886035

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19961, 99805, 219571, 379259, 1097855, 1896295, 4171849, 20859245]

約数ペア:

[(1, 20859245), (5, 4171849), (11, 1896295), (19, 1097855), (55, 379259), (95, 219571), (209, 99805), (1045, 19961)]