51212800

素因数分解:

$2^9\times 5^2\times {\mathrm{4001}}^1$

素因数の和:4029

約数の個数: 60

約数和(自身を含む): 126915426

約数和(自身を除く): 75702626

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, 2560, 3200, 4001, 6400, 8002, 12800, 16004, 20005, 32008, 40010, 64016, 80020, 100025, 128032, 160040, 200050, 256064, 320080, 400100, 512128, 640160, 800200, 1024256, 1280320, 1600400, 2048512, 2560640, 3200800, 5121280, 6401600, 10242560, 12803200, 25606400, 51212800]

約数ペア:

[(1, 51212800), (2, 25606400), (4, 12803200), (5, 10242560), (8, 6401600), (10, 5121280), (16, 3200800), (20, 2560640), (25, 2048512), (32, 1600400), (40, 1280320), (50, 1024256), (64, 800200), (80, 640160), (100, 512128), (128, 400100), (160, 320080), (200, 256064), (256, 200050), (320, 160040), (400, 128032), (512, 100025), (640, 80020), (800, 64016), (1280, 40010), (1600, 32008), (2560, 20005), (3200, 16004), (4001, 12800), (6400, 8002)]