21787359712

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{887}}^1\times {\mathrm{17851}}^1$

素因数の和:18791

約数の個数: 48

約数和(自身を含む): 43943340672

約数和(自身を除く): 22155980960

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 887, 1376, 1774, 3548, 7096, 14192, 17851, 28384, 35702, 38141, 71404, 76282, 142808, 152564, 285616, 305128, 571232, 610256, 767593, 1220512, 1535186, 3070372, 6140744, 12281488, 15833837, 24562976, 31667674, 63335348, 126670696, 253341392, 506682784, 680854991, 1361709982, 2723419964, 5446839928, 10893679856, 21787359712]

約数ペア:

[(1, 21787359712), (2, 10893679856), (4, 5446839928), (8, 2723419964), (16, 1361709982), (32, 680854991), (43, 506682784), (86, 253341392), (172, 126670696), (344, 63335348), (688, 31667674), (887, 24562976), (1376, 15833837), (1774, 12281488), (3548, 6140744), (7096, 3070372), (14192, 1535186), (17851, 1220512), (28384, 767593), (35702, 610256), (38141, 571232), (71404, 305128), (76282, 285616), (142808, 152564)]