20554618

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^2\times {\mathrm{83}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 38404800

約数和(自身を除く): 17850182

約数列:

[1, 2, 7, 14, 19, 38, 49, 83, 98, 133, 166, 266, 343, 361, 581, 686, 722, 931, 1162, 1577, 1862, 2527, 3154, 4067, 5054, 6517, 8134, 11039, 13034, 17689, 22078, 28469, 29963, 35378, 56938, 59926, 77273, 123823, 154546, 209741, 247646, 419482, 540911, 1081822, 1468187, 2936374, 10277309, 20554618]

約数ペア:

[(1, 20554618), (2, 10277309), (7, 2936374), (14, 1468187), (19, 1081822), (38, 540911), (49, 419482), (83, 247646), (98, 209741), (133, 154546), (166, 123823), (266, 77273), (343, 59926), (361, 56938), (581, 35378), (686, 29963), (722, 28469), (931, 22078), (1162, 17689), (1577, 13034), (1862, 11039), (2527, 8134), (3154, 6517), (4067, 5054)]