15939747

素因数分解:

$3^4\times {\mathrm{307}}^1\times {\mathrm{641}}^1$

素因数の和:960

約数の個数: 20

約数和(自身を含む): 23926056

約数和(自身を除く): 7986309

約数列:

[1, 3, 9, 27, 81, 307, 641, 921, 1923, 2763, 5769, 8289, 17307, 24867, 51921, 196787, 590361, 1771083, 5313249, 15939747]

約数ペア:

[(1, 15939747), (3, 5313249), (9, 1771083), (27, 590361), (81, 196787), (307, 51921), (641, 24867), (921, 17307), (1923, 8289), (2763, 5769)]