388987983

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{81703}}^1$

素因数の和:81755

約数の個数: 18

約数和(自身を含む): 587370056

約数和(自身を除く): 198382073

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 4761, 81703, 245109, 735327, 1879169, 5637507, 16912521, 43220887, 129662661, 388987983]

約数ペア:

[(1, 388987983), (3, 129662661), (9, 43220887), (23, 16912521), (69, 5637507), (207, 1879169), (529, 735327), (1587, 245109), (4761, 81703)]