18489465

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:731

約数の個数: 40

約数和(自身を含む): 33663168

約数和(自身を除く): 15173703

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 643, 1065, 1917, 1929, 3195, 3215, 5751, 5787, 9585, 9645, 17361, 28755, 28935, 45653, 52083, 86805, 136959, 228265, 260415, 410877, 684795, 1232631, 2054385, 3697893, 6163155, 18489465]

約数ペア:

[(1, 18489465), (3, 6163155), (5, 3697893), (9, 2054385), (15, 1232631), (27, 684795), (45, 410877), (71, 260415), (81, 228265), (135, 136959), (213, 86805), (355, 52083), (405, 45653), (639, 28935), (643, 28755), (1065, 17361), (1917, 9645), (1929, 9585), (3195, 5787), (3215, 5751)]