21146487

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 10706313

約数列:

[1, 3, 17, 19, 51, 57, 139, 157, 323, 417, 471, 969, 2363, 2641, 2669, 2983, 7089, 7923, 8007, 8949, 21823, 44897, 50711, 65469, 134691, 152133, 370991, 414637, 1112973, 1243911, 7048829, 21146487]

約数ペア:

[(1, 21146487), (3, 7048829), (17, 1243911), (19, 1112973), (51, 414637), (57, 370991), (139, 152133), (157, 134691), (323, 65469), (417, 50711), (471, 44897), (969, 21823), (2363, 8949), (2641, 8007), (2669, 7923), (2983, 7089)]