15555813

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2999}}^1$

素因数の和:3041

約数の個数: 32

約数和(自身を含む): 26880000

約数和(自身を除く): 11324187

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 2999, 5187, 8997, 20993, 38987, 56981, 62979, 116961, 170943, 272909, 398867, 740753, 818727, 1196601, 2222259, 5185271, 15555813]

約数ペア:

[(1, 15555813), (3, 5185271), (7, 2222259), (13, 1196601), (19, 818727), (21, 740753), (39, 398867), (57, 272909), (91, 170943), (133, 116961), (247, 62979), (273, 56981), (399, 38987), (741, 20993), (1729, 8997), (2999, 5187)]