28889861

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:95

約数の個数: 64

約数和(自身を含む): 43008000

約数和(自身を除く): 14118139

約数列:

[1, 7, 11, 13, 19, 31, 49, 77, 91, 133, 143, 209, 217, 247, 341, 343, 403, 539, 589, 637, 931, 1001, 1463, 1519, 1729, 2387, 2717, 2821, 3773, 4123, 4433, 4459, 6479, 6517, 7007, 7657, 10241, 10633, 12103, 16709, 19019, 19747, 28861, 31031, 45353, 49049, 53599, 71687, 84227, 84721, 116963, 133133, 138229, 202027, 217217, 317471, 375193, 589589, 931931, 1520519, 2222297, 2626351, 4127123, 28889861]

約数ペア:

[(1, 28889861), (7, 4127123), (11, 2626351), (13, 2222297), (19, 1520519), (31, 931931), (49, 589589), (77, 375193), (91, 317471), (133, 217217), (143, 202027), (209, 138229), (217, 133133), (247, 116963), (341, 84721), (343, 84227), (403, 71687), (539, 53599), (589, 49049), (637, 45353), (931, 31031), (1001, 28861), (1463, 19747), (1519, 19019), (1729, 16709), (2387, 12103), (2717, 10633), (2821, 10241), (3773, 7657), (4123, 7007), (4433, 6517), (4459, 6479)]