21539818

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^2$

素因数の和:238

約数の個数: 24

約数和(自身を含む): 34233408

約数和(自身を除く): 12693590

約数列:

[1, 2, 43, 47, 73, 86, 94, 146, 2021, 3139, 3431, 4042, 5329, 6278, 6862, 10658, 147533, 229147, 250463, 295066, 458294, 500926, 10769909, 21539818]

約数ペア:

[(1, 21539818), (2, 10769909), (43, 500926), (47, 458294), (73, 295066), (86, 250463), (94, 229147), (146, 147533), (2021, 10658), (3139, 6862), (3431, 6278), (4042, 5329)]