21887085

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 39836160

約数和(自身を除く): 17949075

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 121, 155, 165, 341, 363, 389, 465, 605, 1023, 1167, 1705, 1815, 1945, 3751, 4279, 5115, 5835, 11253, 12059, 12837, 18755, 21395, 36177, 47069, 56265, 60295, 64185, 132649, 141207, 180885, 235345, 397947, 663245, 706035, 1459139, 1989735, 4377417, 7295695, 21887085]

約数ペア:

[(1, 21887085), (3, 7295695), (5, 4377417), (11, 1989735), (15, 1459139), (31, 706035), (33, 663245), (55, 397947), (93, 235345), (121, 180885), (155, 141207), (165, 132649), (341, 64185), (363, 60295), (389, 56265), (465, 47069), (605, 36177), (1023, 21395), (1167, 18755), (1705, 12837), (1815, 12059), (1945, 11253), (3751, 5835), (4279, 5115)]