20983808

素因数分解:

$2^{12}\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:180

約数の個数: 52

約数和(自身を含む): 43248480

約数和(自身を除く): 22264672

約数列:

[1, 2, 4, 8, 16, 32, 47, 64, 94, 109, 128, 188, 218, 256, 376, 436, 512, 752, 872, 1024, 1504, 1744, 2048, 3008, 3488, 4096, 5123, 6016, 6976, 10246, 12032, 13952, 20492, 24064, 27904, 40984, 48128, 55808, 81968, 96256, 111616, 163936, 192512, 223232, 327872, 446464, 655744, 1311488, 2622976, 5245952, 10491904, 20983808]

約数ペア:

[(1, 20983808), (2, 10491904), (4, 5245952), (8, 2622976), (16, 1311488), (32, 655744), (47, 446464), (64, 327872), (94, 223232), (109, 192512), (128, 163936), (188, 111616), (218, 96256), (256, 81968), (376, 55808), (436, 48128), (512, 40984), (752, 27904), (872, 24064), (1024, 20492), (1504, 13952), (1744, 12032), (2048, 10246), (3008, 6976), (3488, 6016), (4096, 5123)]