20156805

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3527}}^1$

素因数の和:3665

約数の個数: 24

約数和(自身を含む): 35223552

約数和(自身を除く): 15066747

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3527, 5715, 10581, 17635, 31743, 52905, 158715, 447929, 1343787, 2239645, 4031361, 6718935, 20156805]

約数ペア:

[(1, 20156805), (3, 6718935), (5, 4031361), (9, 2239645), (15, 1343787), (45, 447929), (127, 158715), (381, 52905), (635, 31743), (1143, 17635), (1905, 10581), (3527, 5715)]