25137931

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 34728960

約数和(自身を除く): 9591029

約数列:

[1, 7, 13, 19, 31, 49, 67, 91, 133, 217, 247, 403, 469, 589, 637, 871, 931, 1273, 1519, 1729, 2077, 2821, 3283, 4123, 6097, 7657, 8911, 12103, 14539, 16549, 19747, 27001, 28861, 39463, 42679, 53599, 62377, 101773, 115843, 189007, 276241, 375193, 513019, 810901, 1323049, 1933687, 3591133, 25137931]

約数ペア:

[(1, 25137931), (7, 3591133), (13, 1933687), (19, 1323049), (31, 810901), (49, 513019), (67, 375193), (91, 276241), (133, 189007), (217, 115843), (247, 101773), (403, 62377), (469, 53599), (589, 42679), (637, 39463), (871, 28861), (931, 27001), (1273, 19747), (1519, 16549), (1729, 14539), (2077, 12103), (2821, 8911), (3283, 7657), (4123, 6097)]