20412800

素因数分解:

$2^7\times 5^2\times {\mathrm{6379}}^1$

素因数の和:6403

約数の個数: 48

約数和(自身を含む): 50433900

約数和(自身を除く): 30021100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6379, 12758, 25516, 31895, 51032, 63790, 102064, 127580, 159475, 204128, 255160, 318950, 408256, 510320, 637900, 816512, 1020640, 1275800, 2041280, 2551600, 4082560, 5103200, 10206400, 20412800]

約数ペア:

[(1, 20412800), (2, 10206400), (4, 5103200), (5, 4082560), (8, 2551600), (10, 2041280), (16, 1275800), (20, 1020640), (25, 816512), (32, 637900), (40, 510320), (50, 408256), (64, 318950), (80, 255160), (100, 204128), (128, 159475), (160, 127580), (200, 102064), (320, 63790), (400, 51032), (640, 31895), (800, 25516), (1600, 12758), (3200, 6379)]