21142527

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 34013184

約数和(自身を除く): 12870657

約数列:

[1, 3, 7, 21, 31, 47, 93, 141, 217, 329, 651, 691, 987, 1457, 2073, 4371, 4837, 10199, 14511, 21421, 30597, 32477, 64263, 97431, 149947, 227339, 449841, 682017, 1006787, 3020361, 7047509, 21142527]

約数ペア:

[(1, 21142527), (3, 7047509), (7, 3020361), (21, 1006787), (31, 682017), (47, 449841), (93, 227339), (141, 149947), (217, 97431), (329, 64263), (651, 32477), (691, 30597), (987, 21421), (1457, 14511), (2073, 10199), (4371, 4837)]