25820980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{31489}}^1$

素因数の和:31539

約数の個数: 24

約数和(自身を含む): 55548360

約数和(自身を除く): 29727380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 31489, 62978, 125956, 157445, 314890, 629780, 1291049, 2582098, 5164196, 6455245, 12910490, 25820980]

約数ペア:

[(1, 25820980), (2, 12910490), (4, 6455245), (5, 5164196), (10, 2582098), (20, 1291049), (41, 629780), (82, 314890), (164, 157445), (205, 125956), (410, 62978), (820, 31489)]