18666315

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^2\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 48

約数和(自身を含む): 34443360

約数和(自身を除く): 15777045

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 101, 111, 135, 185, 303, 333, 505, 555, 909, 999, 1369, 1515, 1665, 2727, 3737, 4107, 4545, 4995, 6845, 11211, 12321, 13635, 18685, 20535, 33633, 36963, 56055, 61605, 100899, 138269, 168165, 184815, 414807, 504495, 691345, 1244421, 2074035, 3733263, 6222105, 18666315]

約数ペア:

[(1, 18666315), (3, 6222105), (5, 3733263), (9, 2074035), (15, 1244421), (27, 691345), (37, 504495), (45, 414807), (101, 184815), (111, 168165), (135, 138269), (185, 100899), (303, 61605), (333, 56055), (505, 36963), (555, 33633), (909, 20535), (999, 18685), (1369, 13635), (1515, 12321), (1665, 11211), (2727, 6845), (3737, 4995), (4107, 4545)]