19806215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27701}}^1$

素因数の和:27730

約数の個数: 16

約数和(自身を含む): 27923616

約数和(自身を除く): 8117401

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27701, 138505, 304711, 360113, 1523555, 1800565, 3961243, 19806215]

約数ペア:

[(1, 19806215), (5, 3961243), (11, 1800565), (13, 1523555), (55, 360113), (65, 304711), (143, 138505), (715, 27701)]