20680965

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12421}}^1$

素因数の和:12469

約数の個数: 24

約数和(自身を含む): 36818808

約数和(自身を除く): 16137843

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12421, 37263, 62105, 111789, 186315, 459577, 558945, 1378731, 2297885, 4136193, 6893655, 20680965]

約数ペア:

[(1, 20680965), (3, 6893655), (5, 4136193), (9, 2297885), (15, 1378731), (37, 558945), (45, 459577), (111, 186315), (185, 111789), (333, 62105), (555, 37263), (1665, 12421)]