1290160

素因数分解:

$2^4\times 5^1\times {\mathrm{16127}}^1$

素因数の和:16140

約数の個数: 20

約数和(自身を含む): 2999808

約数和(自身を除く): 1709648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16127, 32254, 64508, 80635, 129016, 161270, 258032, 322540, 645080, 1290160]

約数ペア:

[(1, 1290160), (2, 645080), (4, 322540), (5, 258032), (8, 161270), (10, 129016), (16, 80635), (20, 64508), (40, 32254), (80, 16127)]