20640585

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3709}}^1$

素因数の和:3777

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 17824695

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3709, 5565, 11127, 18545, 25963, 55635, 77889, 129815, 196577, 389445, 589731, 982885, 1376039, 2948655, 4128117, 6880195, 20640585]

約数ペア:

[(1, 20640585), (3, 6880195), (5, 4128117), (7, 2948655), (15, 1376039), (21, 982885), (35, 589731), (53, 389445), (105, 196577), (159, 129815), (265, 77889), (371, 55635), (795, 25963), (1113, 18545), (1855, 11127), (3709, 5565)]