21365991

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{46549}}^1$

素因数の和:46575

約数の個数: 16

約数和(自身を含む): 33516000

約数和(自身を除く): 12150009

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 46549, 139647, 418941, 791333, 1256823, 2373999, 7121997, 21365991]

約数ペア:

[(1, 21365991), (3, 7121997), (9, 2373999), (17, 1256823), (27, 791333), (51, 418941), (153, 139647), (459, 46549)]