2560840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{877}}^1$

素因数の和:961

約数の個数: 32

約数和(自身を含む): 5847480

約数和(自身を除く): 3286640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 877, 1460, 1754, 2920, 3508, 4385, 7016, 8770, 17540, 35080, 64021, 128042, 256084, 320105, 512168, 640210, 1280420, 2560840]

約数ペア:

[(1, 2560840), (2, 1280420), (4, 640210), (5, 512168), (8, 320105), (10, 256084), (20, 128042), (40, 64021), (73, 35080), (146, 17540), (292, 8770), (365, 7016), (584, 4385), (730, 3508), (877, 2920), (1460, 1754)]