25720905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{503}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 47222784

約数和(自身を除く): 21501879

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 487, 503, 1461, 1509, 2435, 2515, 3409, 3521, 7305, 7545, 10227, 10563, 17045, 17605, 51135, 52815, 244961, 734883, 1224805, 1714727, 3674415, 5144181, 8573635, 25720905]

約数ペア:

[(1, 25720905), (3, 8573635), (5, 5144181), (7, 3674415), (15, 1714727), (21, 1224805), (35, 734883), (105, 244961), (487, 52815), (503, 51135), (1461, 17605), (1509, 17045), (2435, 10563), (2515, 10227), (3409, 7545), (3521, 7305)]