51171280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15601}}^1$

素因数の和:15655

約数の個数: 40

約数和(自身を含む): 121882824

約数和(自身を除く): 70711544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 15601, 31202, 62404, 78005, 124808, 156010, 249616, 312020, 624040, 639641, 1248080, 1279282, 2558564, 3198205, 5117128, 6396410, 10234256, 12792820, 25585640, 51171280]

約数ペア:

[(1, 51171280), (2, 25585640), (4, 12792820), (5, 10234256), (8, 6396410), (10, 5117128), (16, 3198205), (20, 2558564), (40, 1279282), (41, 1248080), (80, 639641), (82, 624040), (164, 312020), (205, 249616), (328, 156010), (410, 124808), (656, 78005), (820, 62404), (1640, 31202), (3280, 15601)]