21897664

素因数分解:

$2^6\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:237

約数の個数: 56

約数和(自身を含む): 45486320

約数和(自身を除く): 23588656

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 73, 86, 109, 146, 172, 218, 292, 344, 436, 584, 688, 872, 1168, 1376, 1744, 2336, 2752, 3139, 3488, 4672, 4687, 6278, 6976, 7957, 9374, 12556, 15914, 18748, 25112, 31828, 37496, 50224, 63656, 74992, 100448, 127312, 149984, 200896, 254624, 299968, 342151, 509248, 684302, 1368604, 2737208, 5474416, 10948832, 21897664]

約数ペア:

[(1, 21897664), (2, 10948832), (4, 5474416), (8, 2737208), (16, 1368604), (32, 684302), (43, 509248), (64, 342151), (73, 299968), (86, 254624), (109, 200896), (146, 149984), (172, 127312), (218, 100448), (292, 74992), (344, 63656), (436, 50224), (584, 37496), (688, 31828), (872, 25112), (1168, 18748), (1376, 15914), (1744, 12556), (2336, 9374), (2752, 7957), (3139, 6976), (3488, 6278), (4672, 4687)]