15684981

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 23654400

約数和(自身を除く): 7969419

約数列:

[1, 3, 13, 39, 43, 47, 129, 141, 199, 559, 597, 611, 1677, 1833, 2021, 2587, 6063, 7761, 8557, 9353, 25671, 26273, 28059, 78819, 111241, 121589, 333723, 364767, 402179, 1206537, 5228327, 15684981]

約数ペア:

[(1, 15684981), (3, 5228327), (13, 1206537), (39, 402179), (43, 364767), (47, 333723), (129, 121589), (141, 111241), (199, 78819), (559, 28059), (597, 26273), (611, 25671), (1677, 9353), (1833, 8557), (2021, 7761), (2587, 6063)]