20803840

素因数分解:

$2^8\times 5^1\times {\mathrm{16253}}^1$

素因数の和:16274

約数の個数: 36

約数和(自身を含む): 49834764

約数和(自身を除く): 29030924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16253, 32506, 65012, 81265, 130024, 162530, 260048, 325060, 520096, 650120, 1040192, 1300240, 2080384, 2600480, 4160768, 5200960, 10401920, 20803840]

約数ペア:

[(1, 20803840), (2, 10401920), (4, 5200960), (5, 4160768), (8, 2600480), (10, 2080384), (16, 1300240), (20, 1040192), (32, 650120), (40, 520096), (64, 325060), (80, 260048), (128, 162530), (160, 130024), (256, 81265), (320, 65012), (640, 32506), (1280, 16253)]