513280

素因数分解:

$2^8\times 5^1\times {\mathrm{401}}^1$

素因数の和:422

約数の個数: 36

約数和(自身を含む): 1232532

約数和(自身を除く): 719252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 401, 640, 802, 1280, 1604, 2005, 3208, 4010, 6416, 8020, 12832, 16040, 25664, 32080, 51328, 64160, 102656, 128320, 256640, 513280]

約数ペア:

[(1, 513280), (2, 256640), (4, 128320), (5, 102656), (8, 64160), (10, 51328), (16, 32080), (20, 25664), (32, 16040), (40, 12832), (64, 8020), (80, 6416), (128, 4010), (160, 3208), (256, 2005), (320, 1604), (401, 1280), (640, 802)]