18398475

素因数分解:

$3^3\times 5^2\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 34268640

約数和(自身を除く): 15870165

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 97, 135, 225, 281, 291, 485, 675, 843, 873, 1405, 1455, 2425, 2529, 2619, 4215, 4365, 7025, 7275, 7587, 12645, 13095, 21075, 21825, 27257, 37935, 63225, 65475, 81771, 136285, 189675, 245313, 408855, 681425, 735939, 1226565, 2044275, 3679695, 6132825, 18398475]

約数ペア:

[(1, 18398475), (3, 6132825), (5, 3679695), (9, 2044275), (15, 1226565), (25, 735939), (27, 681425), (45, 408855), (75, 245313), (97, 189675), (135, 136285), (225, 81771), (281, 65475), (291, 63225), (485, 37935), (675, 27257), (843, 21825), (873, 21075), (1405, 13095), (1455, 12645), (2425, 7587), (2529, 7275), (2619, 7025), (4215, 4365)]