28776890

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{66923}}^1$

素因数の和:66973

約数の個数: 16

約数和(自身を含む): 53003808

約数和(自身を除く): 24226918

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 66923, 133846, 334615, 669230, 2877689, 5755378, 14388445, 28776890]

約数ペア:

[(1, 28776890), (2, 14388445), (5, 5755378), (10, 2877689), (43, 669230), (86, 334615), (215, 133846), (430, 66923)]