1981317

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{503}}^1$

素因数の和:620

約数の個数: 16

約数和(自身を含む): 2878848

約数和(自身を除く): 897531

約数列:

[1, 3, 13, 39, 101, 303, 503, 1313, 1509, 3939, 6539, 19617, 50803, 152409, 660439, 1981317]

約数ペア:

[(1, 1981317), (3, 660439), (13, 152409), (39, 50803), (101, 19617), (303, 6539), (503, 3939), (1313, 1509)]