1280560

素因数分解:

$2^4\times 5^1\times {\mathrm{16007}}^1$

素因数の和:16020

約数の個数: 20

約数和(自身を含む): 2977488

約数和(自身を除く): 1696928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16007, 32014, 64028, 80035, 128056, 160070, 256112, 320140, 640280, 1280560]

約数ペア:

[(1, 1280560), (2, 640280), (4, 320140), (5, 256112), (8, 160070), (10, 128056), (16, 80035), (20, 64028), (40, 32014), (80, 16007)]