138855857

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 181944000

約数和(自身を除く): 43088143

約数列:

[1, 7, 19, 29, 37, 49, 133, 139, 203, 259, 551, 703, 931, 973, 1073, 1421, 1813, 2641, 3857, 4031, 4921, 5143, 6811, 7511, 18487, 20387, 26999, 28217, 34447, 36001, 52577, 76589, 97717, 129409, 142709, 149147, 197519, 252007, 536123, 684019, 998963, 1044029, 2833793, 3752861, 4788133, 7308203, 19836551, 138855857]

約数ペア:

[(1, 138855857), (7, 19836551), (19, 7308203), (29, 4788133), (37, 3752861), (49, 2833793), (133, 1044029), (139, 998963), (203, 684019), (259, 536123), (551, 252007), (703, 197519), (931, 149147), (973, 142709), (1073, 129409), (1421, 97717), (1813, 76589), (2641, 52577), (3857, 36001), (4031, 34447), (4921, 28217), (5143, 26999), (6811, 20387), (7511, 18487)]