21151232

素因数分解:

$2^9\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:506

約数の個数: 40

約数和(自身を含む): 42761400

約数和(自身を除く): 21610168

約数列:

[1, 2, 4, 8, 16, 32, 64, 109, 128, 218, 256, 379, 436, 512, 758, 872, 1516, 1744, 3032, 3488, 6064, 6976, 12128, 13952, 24256, 27904, 41311, 48512, 55808, 82622, 97024, 165244, 194048, 330488, 660976, 1321952, 2643904, 5287808, 10575616, 21151232]

約数ペア:

[(1, 21151232), (2, 10575616), (4, 5287808), (8, 2643904), (16, 1321952), (32, 660976), (64, 330488), (109, 194048), (128, 165244), (218, 97024), (256, 82622), (379, 55808), (436, 48512), (512, 41311), (758, 27904), (872, 24256), (1516, 13952), (1744, 12128), (3032, 6976), (3488, 6064)]