21385983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{3919}}^1$

素因数の和:4046

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 9095937

約数列:

[1, 3, 17, 51, 107, 321, 1819, 3919, 5457, 11757, 66623, 199869, 419333, 1257999, 7128661, 21385983]

約数ペア:

[(1, 21385983), (3, 7128661), (17, 1257999), (51, 419333), (107, 199869), (321, 66623), (1819, 11757), (3919, 5457)]