21719013

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{3907}}^1$

素因数の和:4036

約数の個数: 16

約数和(自身を含む): 30951360

約数和(自身を除く): 9232347

約数列:

[1, 3, 17, 51, 109, 327, 1853, 3907, 5559, 11721, 66419, 199257, 425863, 1277589, 7239671, 21719013]

約数ペア:

[(1, 21719013), (3, 7239671), (17, 1277589), (51, 425863), (109, 199257), (327, 66419), (1853, 11721), (3907, 5559)]