20000805

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2819}}^1$

素因数の和:2881

約数の個数: 32

約数和(自身を含む): 35735040

約数和(自身を除く): 15734235

約数列:

[1, 3, 5, 11, 15, 33, 43, 55, 129, 165, 215, 473, 645, 1419, 2365, 2819, 7095, 8457, 14095, 31009, 42285, 93027, 121217, 155045, 363651, 465135, 606085, 1333387, 1818255, 4000161, 6666935, 20000805]

約数ペア:

[(1, 20000805), (3, 6666935), (5, 4000161), (11, 1818255), (15, 1333387), (33, 606085), (43, 465135), (55, 363651), (129, 155045), (165, 121217), (215, 93027), (473, 42285), (645, 31009), (1419, 14095), (2365, 8457), (2819, 7095)]