28681215

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 47900160

約数和(自身を除く): 19218945

約数列:

[1, 3, 5, 15, 43, 53, 129, 159, 215, 265, 645, 795, 839, 2279, 2517, 4195, 6837, 11395, 12585, 34185, 36077, 44467, 108231, 133401, 180385, 222335, 541155, 667005, 1912081, 5736243, 9560405, 28681215]

約数ペア:

[(1, 28681215), (3, 9560405), (5, 5736243), (15, 1912081), (43, 667005), (53, 541155), (129, 222335), (159, 180385), (215, 133401), (265, 108231), (645, 44467), (795, 36077), (839, 34185), (2279, 12585), (2517, 11395), (4195, 6837)]