21641768

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65981}}^1$

素因数の和:66028

約数の個数: 16

約数和(自身を含む): 41568660

約数和(自身を除く): 19926892

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65981, 131962, 263924, 527848, 2705221, 5410442, 10820884, 21641768]

約数ペア:

[(1, 21641768), (2, 10820884), (4, 5410442), (8, 2705221), (41, 527848), (82, 263924), (164, 131962), (328, 65981)]