18663075

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:705

約数の個数: 48

約数和(自身を含む): 35136640

約数和(自身を除く): 16473565

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 643, 645, 675, 1075, 1161, 1929, 1935, 3215, 3225, 5787, 5805, 9645, 9675, 16075, 17361, 27649, 28935, 29025, 48225, 82947, 86805, 138245, 144675, 248841, 414735, 434025, 691225, 746523, 1244205, 2073675, 3732615, 6221025, 18663075]

約数ペア:

[(1, 18663075), (3, 6221025), (5, 3732615), (9, 2073675), (15, 1244205), (25, 746523), (27, 691225), (43, 434025), (45, 414735), (75, 248841), (129, 144675), (135, 138245), (215, 86805), (225, 82947), (387, 48225), (643, 29025), (645, 28935), (675, 27649), (1075, 17361), (1161, 16075), (1929, 9675), (1935, 9645), (3215, 5805), (3225, 5787)]