20825600

素因数分解:

$2^9\times 5^2\times {\mathrm{1627}}^1$

素因数の和:1655

約数の個数: 60

約数和(自身を含む): 51628764

約数和(自身を除く): 30803164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1600, 1627, 2560, 3200, 3254, 6400, 6508, 8135, 12800, 13016, 16270, 26032, 32540, 40675, 52064, 65080, 81350, 104128, 130160, 162700, 208256, 260320, 325400, 416512, 520640, 650800, 833024, 1041280, 1301600, 2082560, 2603200, 4165120, 5206400, 10412800, 20825600]

約数ペア:

[(1, 20825600), (2, 10412800), (4, 5206400), (5, 4165120), (8, 2603200), (10, 2082560), (16, 1301600), (20, 1041280), (25, 833024), (32, 650800), (40, 520640), (50, 416512), (64, 325400), (80, 260320), (100, 208256), (128, 162700), (160, 130160), (200, 104128), (256, 81350), (320, 65080), (400, 52064), (512, 40675), (640, 32540), (800, 26032), (1280, 16270), (1600, 13016), (1627, 12800), (2560, 8135), (3200, 6508), (3254, 6400)]