21491744

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15619}}^1$

素因数の和:15672

約数の個数: 24

約数和(自身を含む): 43298640

約数和(自身を除く): 21806896

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15619, 31238, 62476, 124952, 249904, 499808, 671617, 1343234, 2686468, 5372936, 10745872, 21491744]

約数ペア:

[(1, 21491744), (2, 10745872), (4, 5372936), (8, 2686468), (16, 1343234), (32, 671617), (43, 499808), (86, 249904), (172, 124952), (344, 62476), (688, 31238), (1376, 15619)]