21821984

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15859}}^1$

素因数の和:15912

約数の個数: 24

約数和(自身を含む): 43963920

約数和(自身を除く): 22141936

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15859, 31718, 63436, 126872, 253744, 507488, 681937, 1363874, 2727748, 5455496, 10910992, 21821984]

約数ペア:

[(1, 21821984), (2, 10910992), (4, 5455496), (8, 2727748), (16, 1363874), (32, 681937), (43, 507488), (86, 253744), (172, 126872), (344, 63436), (688, 31718), (1376, 15859)]