21316581

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5521}}^1$

素因数の和:5554

約数の個数: 32

約数和(自身を含む): 37107840

約数和(自身を除く): 15791259

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 99, 117, 143, 297, 351, 429, 1287, 3861, 5521, 16563, 49689, 60731, 71773, 149067, 182193, 215319, 546579, 645957, 789503, 1639737, 1937871, 2368509, 7105527, 21316581]

約数ペア:

[(1, 21316581), (3, 7105527), (9, 2368509), (11, 1937871), (13, 1639737), (27, 789503), (33, 645957), (39, 546579), (99, 215319), (117, 182193), (143, 149067), (297, 71773), (351, 60731), (429, 49689), (1287, 16563), (3861, 5521)]