21630028

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{33587}}^1$

素因数の和:33621

約数の個数: 24

約数和(自身を含む): 45142272

約数和(自身を除く): 23512244

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 33587, 67174, 134348, 235109, 470218, 772501, 940436, 1545002, 3090004, 5407507, 10815014, 21630028]

約数ペア:

[(1, 21630028), (2, 10815014), (4, 5407507), (7, 3090004), (14, 1545002), (23, 940436), (28, 772501), (46, 470218), (92, 235109), (161, 134348), (322, 67174), (644, 33587)]