21557578

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66949}}^1$

素因数の和:66981

約数の個数: 16

約数和(自身を含む): 38563200

約数和(自身を除く): 17005622

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66949, 133898, 468643, 937286, 1539827, 3079654, 10778789, 21557578]

約数ペア:

[(1, 21557578), (2, 10778789), (7, 3079654), (14, 1539827), (23, 937286), (46, 468643), (161, 133898), (322, 66949)]