18008775

素因数分解:

$3^2\times 5^2\times {\mathrm{80039}}^1$

素因数の和:80055

約数の個数: 18

約数和(自身を含む): 32256120

約数和(自身を除く): 14247345

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 80039, 240117, 400195, 720351, 1200585, 2000975, 3601755, 6002925, 18008775]

約数ペア:

[(1, 18008775), (3, 6002925), (5, 3601755), (9, 2000975), (15, 1200585), (25, 720351), (45, 400195), (75, 240117), (225, 80039)]