20287515

素因数分解:

$3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{5659}}^1$

素因数の和:5906

約数の個数: 16

約数和(自身を含む): 32601600

約数和(自身を除く): 12314085

約数列:

[1, 3, 5, 15, 239, 717, 1195, 3585, 5659, 16977, 28295, 84885, 1352501, 4057503, 6762505, 20287515]

約数ペア:

[(1, 20287515), (3, 6762505), (5, 4057503), (15, 1352501), (239, 84885), (717, 28295), (1195, 16977), (3585, 5659)]