20979855

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35863}}^1$

素因数の和:35887

約数の個数: 24

約数和(自身を含む): 39163488

約数和(自身を除く): 18183633

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35863, 107589, 179315, 322767, 466219, 537945, 1398657, 1613835, 2331095, 4195971, 6993285, 20979855]

約数ペア:

[(1, 20979855), (3, 6993285), (5, 4195971), (9, 2331095), (13, 1613835), (15, 1398657), (39, 537945), (45, 466219), (65, 322767), (117, 179315), (195, 107589), (585, 35863)]