20184219

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 14185701

約数列:

[1, 3, 9, 11, 17, 33, 51, 67, 99, 153, 179, 187, 201, 537, 561, 603, 737, 1139, 1611, 1683, 1969, 2211, 3043, 3417, 5907, 6633, 9129, 10251, 11993, 12529, 17721, 27387, 33473, 35979, 37587, 100419, 107937, 112761, 131923, 203881, 301257, 395769, 611643, 1187307, 1834929, 2242691, 6728073, 20184219]

約数ペア:

[(1, 20184219), (3, 6728073), (9, 2242691), (11, 1834929), (17, 1187307), (33, 611643), (51, 395769), (67, 301257), (99, 203881), (153, 131923), (179, 112761), (187, 107937), (201, 100419), (537, 37587), (561, 35979), (603, 33473), (737, 27387), (1139, 17721), (1611, 12529), (1683, 11993), (1969, 10251), (2211, 9129), (3043, 6633), (3417, 5907)]