21212128

素因数分解:

$2^5\times 7^1\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 48039264

約数和(自身を除く): 26827136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 281, 337, 562, 674, 1124, 1348, 1967, 2248, 2359, 2696, 3934, 4496, 4718, 5392, 7868, 8992, 9436, 10784, 15736, 18872, 31472, 37744, 62944, 75488, 94697, 189394, 378788, 662879, 757576, 1325758, 1515152, 2651516, 3030304, 5303032, 10606064, 21212128]

約数ペア:

[(1, 21212128), (2, 10606064), (4, 5303032), (7, 3030304), (8, 2651516), (14, 1515152), (16, 1325758), (28, 757576), (32, 662879), (56, 378788), (112, 189394), (224, 94697), (281, 75488), (337, 62944), (562, 37744), (674, 31472), (1124, 18872), (1348, 15736), (1967, 10784), (2248, 9436), (2359, 8992), (2696, 7868), (3934, 5392), (4496, 4718)]