21612832

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 22628288

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 113, 139, 172, 226, 278, 344, 452, 556, 688, 904, 1112, 1376, 1808, 2224, 3616, 4448, 4859, 5977, 9718, 11954, 15707, 19436, 23908, 31414, 38872, 47816, 62828, 77744, 95632, 125656, 155488, 191264, 251312, 502624, 675401, 1350802, 2701604, 5403208, 10806416, 21612832]

約数ペア:

[(1, 21612832), (2, 10806416), (4, 5403208), (8, 2701604), (16, 1350802), (32, 675401), (43, 502624), (86, 251312), (113, 191264), (139, 155488), (172, 125656), (226, 95632), (278, 77744), (344, 62828), (452, 47816), (556, 38872), (688, 31414), (904, 23908), (1112, 19436), (1376, 15707), (1808, 11954), (2224, 9718), (3616, 5977), (4448, 4859)]