28187181

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2819}}^1$

素因数の和:2937

約数の個数: 24

約数和(自身を含む): 44871840

約数和(自身を除く): 16684659

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 2819, 3333, 8457, 9999, 25371, 31009, 93027, 279081, 284719, 854157, 2562471, 3131909, 9395727, 28187181]

約数ペア:

[(1, 28187181), (3, 9395727), (9, 3131909), (11, 2562471), (33, 854157), (99, 284719), (101, 279081), (303, 93027), (909, 31009), (1111, 25371), (2819, 9999), (3333, 8457)]