8142440

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{811}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 18416160

約数和(自身を除く): 10273720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 811, 1004, 1255, 1622, 2008, 2510, 3244, 4055, 5020, 6488, 8110, 10040, 16220, 32440, 203561, 407122, 814244, 1017805, 1628488, 2035610, 4071220, 8142440]

約数ペア:

[(1, 8142440), (2, 4071220), (4, 2035610), (5, 1628488), (8, 1017805), (10, 814244), (20, 407122), (40, 203561), (251, 32440), (502, 16220), (811, 10040), (1004, 8110), (1255, 6488), (1622, 5020), (2008, 4055), (2510, 3244)]