12720004

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:708

約数の個数: 36

約数和(自身を含む): 25103484

約数和(自身を除く): 12383480

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 451, 484, 641, 902, 1282, 1804, 2564, 4961, 7051, 9922, 14102, 19844, 26281, 28204, 52562, 77561, 105124, 155122, 289091, 310244, 578182, 1156364, 3180001, 6360002, 12720004]

約数ペア:

[(1, 12720004), (2, 6360002), (4, 3180001), (11, 1156364), (22, 578182), (41, 310244), (44, 289091), (82, 155122), (121, 105124), (164, 77561), (242, 52562), (451, 28204), (484, 26281), (641, 19844), (902, 14102), (1282, 9922), (1804, 7051), (2564, 4961)]