1280540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1489}}^1$

素因数の和:1541

約数の個数: 24

約数和(自身を含む): 2753520

約数和(自身を除く): 1472980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1489, 2978, 5956, 7445, 14890, 29780, 64027, 128054, 256108, 320135, 640270, 1280540]

約数ペア:

[(1, 1280540), (2, 640270), (4, 320135), (5, 256108), (10, 128054), (20, 64027), (43, 29780), (86, 14890), (172, 7445), (215, 5956), (430, 2978), (860, 1489)]