21308823

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4297}}^1$

素因数の和:4351

約数の個数: 24

約数和(自身を含む): 33524400

約数和(自身を除く): 12215577

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4297, 4959, 12891, 38673, 81643, 124613, 244929, 373839, 734787, 1121517, 2367647, 7102941, 21308823]

約数ペア:

[(1, 21308823), (3, 7102941), (9, 2367647), (19, 1121517), (29, 734787), (57, 373839), (87, 244929), (171, 124613), (261, 81643), (551, 38673), (1653, 12891), (4297, 4959)]