81970021

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{3413}}^1$

素因数の和:3540

約数の個数: 16

約数和(自身を含む): 97012224

約数和(自身を除く): 15042203

約数列:

[1, 7, 47, 73, 329, 511, 3413, 3431, 23891, 24017, 160411, 249149, 1122877, 1744043, 11710003, 81970021]

約数ペア:

[(1, 81970021), (7, 11710003), (47, 1744043), (73, 1122877), (329, 249149), (511, 160411), (3413, 24017), (3431, 23891)]