18635409

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 31187520

約数和(自身を除く): 12552111

約数列:

[1, 3, 9, 13, 19, 39, 57, 83, 101, 117, 171, 247, 249, 303, 741, 747, 909, 1079, 1313, 1577, 1919, 2223, 3237, 3939, 4731, 5757, 8383, 9711, 11817, 14193, 17271, 20501, 24947, 25149, 61503, 74841, 75447, 108979, 159277, 184509, 224523, 326937, 477831, 980811, 1433493, 2070601, 6211803, 18635409]

約数ペア:

[(1, 18635409), (3, 6211803), (9, 2070601), (13, 1433493), (19, 980811), (39, 477831), (57, 326937), (83, 224523), (101, 184509), (117, 159277), (171, 108979), (247, 75447), (249, 74841), (303, 61503), (741, 25149), (747, 24947), (909, 20501), (1079, 17271), (1313, 14193), (1577, 11817), (1919, 9711), (2223, 8383), (3237, 5757), (3939, 4731)]