20973561

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26993}}^1$

素因数の和:27040

約数の個数: 16

約数和(自身を含む): 32824704

約数和(自身を除く): 11851143

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26993, 80979, 188951, 566853, 998741, 2996223, 6991187, 20973561]

約数ペア:

[(1, 20973561), (3, 6991187), (7, 2996223), (21, 998741), (37, 566853), (111, 188951), (259, 80979), (777, 26993)]