20675977

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{631}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 24592384

約数和(自身を除く): 3916407

約数列:

[1, 7, 31, 151, 217, 631, 1057, 4417, 4681, 19561, 32767, 95281, 136927, 666967, 2953711, 20675977]

約数ペア:

[(1, 20675977), (7, 2953711), (31, 666967), (151, 136927), (217, 95281), (631, 32767), (1057, 19561), (4417, 4681)]