81062820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450349}}^1$

素因数の和:450364

約数の個数: 36

約数和(自身を含む): 245891100

約数和(自身を除く): 164828280

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450349, 900698, 1351047, 1801396, 2251745, 2702094, 4053141, 4503490, 5404188, 6755235, 8106282, 9006980, 13510470, 16212564, 20265705, 27020940, 40531410, 81062820]

約数ペア:

[(1, 81062820), (2, 40531410), (3, 27020940), (4, 20265705), (5, 16212564), (6, 13510470), (9, 9006980), (10, 8106282), (12, 6755235), (15, 5404188), (18, 4503490), (20, 4053141), (30, 2702094), (36, 2251745), (45, 1801396), (60, 1351047), (90, 900698), (180, 450349)]