20481536

素因数分解:

$2^9\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:494

約数の個数: 40

約数和(自身を含む): 41411040

約数和(自身を除く): 20929504

約数列:

[1, 2, 4, 8, 16, 32, 64, 109, 128, 218, 256, 367, 436, 512, 734, 872, 1468, 1744, 2936, 3488, 5872, 6976, 11744, 13952, 23488, 27904, 40003, 46976, 55808, 80006, 93952, 160012, 187904, 320024, 640048, 1280096, 2560192, 5120384, 10240768, 20481536]

約数ペア:

[(1, 20481536), (2, 10240768), (4, 5120384), (8, 2560192), (16, 1280096), (32, 640048), (64, 320024), (109, 187904), (128, 160012), (218, 93952), (256, 80006), (367, 55808), (436, 46976), (512, 40003), (734, 27904), (872, 23488), (1468, 13952), (1744, 11744), (2936, 6976), (3488, 5872)]