20197976372

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1\times {\mathrm{52223}}^1$

素因数の和:52980

約数の個数: 48

約数和(自身を含む): 42581360640

約数和(自身を除く): 22383384268

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 727, 1454, 2908, 5089, 10178, 13813, 20356, 27626, 52223, 55252, 96691, 104446, 193382, 208892, 365561, 386764, 731122, 992237, 1462244, 1984474, 3968948, 6945659, 13891318, 27782636, 37966121, 75932242, 151864484, 265762847, 531525694, 721356299, 1063051388, 1442712598, 2885425196, 5049494093, 10098988186, 20197976372]

約数ペア:

[(1, 20197976372), (2, 10098988186), (4, 5049494093), (7, 2885425196), (14, 1442712598), (19, 1063051388), (28, 721356299), (38, 531525694), (76, 265762847), (133, 151864484), (266, 75932242), (532, 37966121), (727, 27782636), (1454, 13891318), (2908, 6945659), (5089, 3968948), (10178, 1984474), (13813, 1462244), (20356, 992237), (27626, 731122), (52223, 386764), (55252, 365561), (96691, 208892), (104446, 193382)]