1281036220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1489577}}^1$

素因数の和:1489629

約数の個数: 24

約数和(自身を含む): 2752740144

約数和(自身を除く): 1471703924

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 1489577, 2979154, 5958308, 7447885, 14895770, 29791540, 64051811, 128103622, 256207244, 320259055, 640518110, 1281036220]

約数ペア:

[(1, 1281036220), (2, 640518110), (4, 320259055), (5, 256207244), (10, 128103622), (20, 64051811), (43, 29791540), (86, 14895770), (172, 7447885), (215, 5958308), (430, 2979154), (860, 1489577)]