20981156

素因数分解:

$2^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{3301}}^1$

素因数の和:3539

約数の個数: 24

約数和(自身を含む): 42159936

約数和(自身を除く): 21178780

約数列:

[1, 2, 4, 7, 14, 28, 227, 454, 908, 1589, 3178, 3301, 6356, 6602, 13204, 23107, 46214, 92428, 749327, 1498654, 2997308, 5245289, 10490578, 20981156]

約数ペア:

[(1, 20981156), (2, 10490578), (4, 5245289), (7, 2997308), (14, 1498654), (28, 749327), (227, 92428), (454, 46214), (908, 23107), (1589, 13204), (3178, 6602), (3301, 6356)]