21278769

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1\times {\mathrm{439}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 28892160

約数和(自身を除く): 7613391

約数列:

[1, 3, 107, 151, 321, 439, 453, 1317, 16157, 46973, 48471, 66289, 140919, 198867, 7092923, 21278769]

約数ペア:

[(1, 21278769), (3, 7092923), (107, 198867), (151, 140919), (321, 66289), (439, 48471), (453, 46973), (1317, 16157)]