21500318

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{5351}}^1$

素因数の和:5408

約数の個数: 24

約数和(自身を含む): 38438064

約数和(自身を除く): 16937746

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018, 5351, 10702, 37457, 74914, 219391, 262199, 438782, 524398, 1535737, 3071474, 10750159, 21500318]

約数ペア:

[(1, 21500318), (2, 10750159), (7, 3071474), (14, 1535737), (41, 524398), (49, 438782), (82, 262199), (98, 219391), (287, 74914), (574, 37457), (2009, 10702), (4018, 5351)]