21555986

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{5333}}^1$

素因数の和:5425

約数の個数: 16

約数和(自身を含む): 33796224

約数和(自身を除く): 12240238

約数列:

[1, 2, 43, 47, 86, 94, 2021, 4042, 5333, 10666, 229319, 250651, 458638, 501302, 10777993, 21555986]

約数ペア:

[(1, 21555986), (2, 10777993), (43, 501302), (47, 458638), (86, 250651), (94, 229319), (2021, 10666), (4042, 5333)]