21903340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{25469}}^1$

素因数の和:25521

約数の個数: 24

約数和(自身を含む): 47068560

約数和(自身を除く): 25165220

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 25469, 50938, 101876, 127345, 254690, 509380, 1095167, 2190334, 4380668, 5475835, 10951670, 21903340]

約数ペア:

[(1, 21903340), (2, 10951670), (4, 5475835), (5, 4380668), (10, 2190334), (20, 1095167), (43, 509380), (86, 254690), (172, 127345), (215, 101876), (430, 50938), (860, 25469)]