18145280

素因数分解:

$2^{13}\times 5^1\times {\mathrm{443}}^1$

素因数の和:474

約数の個数: 56

約数和(自身を含む): 43644312

約数和(自身を除く): 25499032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 443, 512, 640, 886, 1024, 1280, 1772, 2048, 2215, 2560, 3544, 4096, 4430, 5120, 7088, 8192, 8860, 10240, 14176, 17720, 20480, 28352, 35440, 40960, 56704, 70880, 113408, 141760, 226816, 283520, 453632, 567040, 907264, 1134080, 1814528, 2268160, 3629056, 4536320, 9072640, 18145280]

約数ペア:

[(1, 18145280), (2, 9072640), (4, 4536320), (5, 3629056), (8, 2268160), (10, 1814528), (16, 1134080), (20, 907264), (32, 567040), (40, 453632), (64, 283520), (80, 226816), (128, 141760), (160, 113408), (256, 70880), (320, 56704), (443, 40960), (512, 35440), (640, 28352), (886, 20480), (1024, 17720), (1280, 14176), (1772, 10240), (2048, 8860), (2215, 8192), (2560, 7088), (3544, 5120), (4096, 4430)]