21437691

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{809}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 31888080

約数和(自身を除く): 10450389

約数列:

[1, 3, 11, 33, 73, 121, 219, 363, 803, 809, 2409, 2427, 8833, 8899, 26499, 26697, 59057, 97889, 177171, 293667, 649627, 1948881, 7145897, 21437691]

約数ペア:

[(1, 21437691), (3, 7145897), (11, 1948881), (33, 649627), (73, 293667), (121, 177171), (219, 97889), (363, 59057), (803, 26697), (809, 26499), (2409, 8899), (2427, 8833)]