81413120

素因数分解:

$2^{10}\times 5^1\times {\mathrm{15901}}^1$

素因数の和:15926

約数の個数: 44

約数和(自身を含む): 195308364

約数和(自身を除く): 113895244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 15901, 31802, 63604, 79505, 127208, 159010, 254416, 318020, 508832, 636040, 1017664, 1272080, 2035328, 2544160, 4070656, 5088320, 8141312, 10176640, 16282624, 20353280, 40706560, 81413120]

約数ペア:

[(1, 81413120), (2, 40706560), (4, 20353280), (5, 16282624), (8, 10176640), (10, 8141312), (16, 5088320), (20, 4070656), (32, 2544160), (40, 2035328), (64, 1272080), (80, 1017664), (128, 636040), (160, 508832), (256, 318020), (320, 254416), (512, 159010), (640, 127208), (1024, 79505), (1280, 63604), (2560, 31802), (5120, 15901)]