21079983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{17971}}^1$

素因数の和:18014

約数の個数: 16

約数和(自身を含む): 31055616

約数和(自身を除く): 9975633

約数列:

[1, 3, 17, 23, 51, 69, 391, 1173, 17971, 53913, 305507, 413333, 916521, 1239999, 7026661, 21079983]

約数ペア:

[(1, 21079983), (3, 7026661), (17, 1239999), (23, 916521), (51, 413333), (69, 305507), (391, 53913), (1173, 17971)]