18877222

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 18862298

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 53, 91, 103, 106, 133, 182, 206, 247, 266, 371, 494, 689, 721, 742, 1007, 1339, 1378, 1442, 1729, 1957, 2014, 2678, 3458, 3914, 4823, 5459, 7049, 9373, 9646, 10918, 13091, 13699, 14098, 18746, 25441, 26182, 27398, 38213, 50882, 70967, 76426, 91637, 103721, 141934, 178087, 183274, 207442, 356174, 496769, 726047, 993538, 1348373, 1452094, 2696746, 9438611, 18877222]

約数ペア:

[(1, 18877222), (2, 9438611), (7, 2696746), (13, 1452094), (14, 1348373), (19, 993538), (26, 726047), (38, 496769), (53, 356174), (91, 207442), (103, 183274), (106, 178087), (133, 141934), (182, 103721), (206, 91637), (247, 76426), (266, 70967), (371, 50882), (494, 38213), (689, 27398), (721, 26182), (742, 25441), (1007, 18746), (1339, 14098), (1378, 13699), (1442, 13091), (1729, 10918), (1957, 9646), (2014, 9373), (2678, 7049), (3458, 5459), (3914, 4823)]