18938668

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 40391680

約数和(自身を除く): 21453012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 97, 133, 194, 266, 367, 388, 532, 679, 734, 1358, 1468, 1843, 2569, 2716, 3686, 5138, 6973, 7372, 10276, 12901, 13946, 25802, 27892, 35599, 48811, 51604, 71198, 97622, 142396, 195244, 249193, 498386, 676381, 996772, 1352762, 2705524, 4734667, 9469334, 18938668]

約数ペア:

[(1, 18938668), (2, 9469334), (4, 4734667), (7, 2705524), (14, 1352762), (19, 996772), (28, 676381), (38, 498386), (76, 249193), (97, 195244), (133, 142396), (194, 97622), (266, 71198), (367, 51604), (388, 48811), (532, 35599), (679, 27892), (734, 25802), (1358, 13946), (1468, 12901), (1843, 10276), (2569, 7372), (2716, 6973), (3686, 5138)]