20869515

素因数分解:

$3^3\times 5^1\times {\mathrm{154589}}^1$

素因数の和:154603

約数の個数: 16

約数和(自身を含む): 37101600

約数和(自身を除く): 16232085

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 154589, 463767, 772945, 1391301, 2318835, 4173903, 6956505, 20869515]

約数ペア:

[(1, 20869515), (3, 6956505), (5, 4173903), (9, 2318835), (15, 1391301), (27, 772945), (45, 463767), (135, 154589)]