621639

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{239}}^1$

素因数の和:279

約数の個数: 18

約数和(自身を含む): 957840

約数和(自身を除く): 336201

約数列:

[1, 3, 9, 17, 51, 153, 239, 289, 717, 867, 2151, 2601, 4063, 12189, 36567, 69071, 207213, 621639]

約数ペア:

[(1, 621639), (3, 207213), (9, 69071), (17, 36567), (51, 12189), (153, 4063), (239, 2601), (289, 2151), (717, 867)]