15813981

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:362

約数の個数: 32

約数和(自身を含む): 24520320

約数和(自身を除く): 8706339

約数列:

[1, 3, 9, 27, 43, 53, 129, 159, 257, 387, 477, 771, 1161, 1431, 2279, 2313, 6837, 6939, 11051, 13621, 20511, 33153, 40863, 61533, 99459, 122589, 298377, 367767, 585703, 1757109, 5271327, 15813981]

約数ペア:

[(1, 15813981), (3, 5271327), (9, 1757109), (27, 585703), (43, 367767), (53, 298377), (129, 122589), (159, 99459), (257, 61533), (387, 40863), (477, 33153), (771, 20511), (1161, 13621), (1431, 11051), (2279, 6939), (2313, 6837)]