18538155

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 33755904

約数和(自身を除く): 15217749

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 97, 137, 155, 279, 291, 411, 465, 485, 685, 873, 1233, 1395, 1455, 2055, 3007, 4247, 4365, 6165, 9021, 12741, 13289, 15035, 21235, 27063, 38223, 39867, 45105, 63705, 66445, 119601, 135315, 191115, 199335, 411959, 598005, 1235877, 2059795, 3707631, 6179385, 18538155]

約数ペア:

[(1, 18538155), (3, 6179385), (5, 3707631), (9, 2059795), (15, 1235877), (31, 598005), (45, 411959), (93, 199335), (97, 191115), (137, 135315), (155, 119601), (279, 66445), (291, 63705), (411, 45105), (465, 39867), (485, 38223), (685, 27063), (873, 21235), (1233, 15035), (1395, 13289), (1455, 12741), (2055, 9021), (3007, 6165), (4247, 4365)]