21205724

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{4349}}^1$

素因数の和:4429

約数の個数: 24

約数和(自身を含む): 39463200

約数和(自身を除く): 18257476

約数列:

[1, 2, 4, 23, 46, 53, 92, 106, 212, 1219, 2438, 4349, 4876, 8698, 17396, 100027, 200054, 230497, 400108, 460994, 921988, 5301431, 10602862, 21205724]

約数ペア:

[(1, 21205724), (2, 10602862), (4, 5301431), (23, 921988), (46, 460994), (53, 400108), (92, 230497), (106, 200054), (212, 100027), (1219, 17396), (2438, 8698), (4349, 4876)]