20509155

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9697}}^1$

素因数の和:9755

約数の個数: 24

約数和(自身を含む): 36309312

約数和(自身を除く): 15800157

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 9697, 29091, 48485, 87273, 145455, 436365, 455759, 1367277, 2278795, 4101831, 6836385, 20509155]

約数ペア:

[(1, 20509155), (3, 6836385), (5, 4101831), (9, 2278795), (15, 1367277), (45, 455759), (47, 436365), (141, 145455), (235, 87273), (423, 48485), (705, 29091), (2115, 9697)]