20552889

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51511}}^1$

素因数の和:51540

約数の個数: 16

約数和(自身を含む): 32967680

約数和(自身を除く): 12414791

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51511, 154533, 360577, 978709, 1081731, 2936127, 6850963, 20552889]

約数ペア:

[(1, 20552889), (3, 6850963), (7, 2936127), (19, 1081731), (21, 978709), (57, 360577), (133, 154533), (399, 51511)]