18639890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81043}}^1$

素因数の和:81073

約数の個数: 16

約数和(自身を含む): 35011008

約数和(自身を除く): 16371118

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 81043, 162086, 405215, 810430, 1863989, 3727978, 9319945, 18639890]

約数ペア:

[(1, 18639890), (2, 9319945), (5, 3727978), (10, 1863989), (23, 810430), (46, 405215), (115, 162086), (230, 81043)]