556420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 1197504

約数和(自身を除く): 641084

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 647, 860, 1294, 2588, 3235, 6470, 12940, 27821, 55642, 111284, 139105, 278210, 556420]

約数ペア:

[(1, 556420), (2, 278210), (4, 139105), (5, 111284), (10, 55642), (20, 27821), (43, 12940), (86, 6470), (172, 3235), (215, 2588), (430, 1294), (647, 860)]