21052689

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 33644544

約数和(自身を除く): 12591855

約数列:

[1, 3, 7, 21, 31, 73, 93, 217, 219, 443, 511, 651, 1329, 1533, 2263, 3101, 6789, 9303, 13733, 15841, 32339, 41199, 47523, 96131, 97017, 226373, 288393, 679119, 1002509, 3007527, 7017563, 21052689]

約数ペア:

[(1, 21052689), (3, 7017563), (7, 3007527), (21, 1002509), (31, 679119), (73, 288393), (93, 226373), (217, 97017), (219, 96131), (443, 47523), (511, 41199), (651, 32339), (1329, 15841), (1533, 13733), (2263, 9303), (3101, 6789)]