28115980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32693}}^1$

素因数の和:32745

約数の個数: 24

約数和(自身を含む): 60418512

約数和(自身を除く): 32302532

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 32693, 65386, 130772, 163465, 326930, 653860, 1405799, 2811598, 5623196, 7028995, 14057990, 28115980]

約数ペア:

[(1, 28115980), (2, 14057990), (4, 7028995), (5, 5623196), (10, 2811598), (20, 1405799), (43, 653860), (86, 326930), (172, 163465), (215, 130772), (430, 65386), (860, 32693)]