21561219

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7417}}^1$

素因数の和:7459

約数の個数: 24

約数和(自身を含む): 34716240

約数和(自身を除く): 13155021

約数列:

[1, 3, 9, 17, 19, 51, 57, 153, 171, 323, 969, 2907, 7417, 22251, 66753, 126089, 140923, 378267, 422769, 1134801, 1268307, 2395691, 7187073, 21561219]

約数ペア:

[(1, 21561219), (3, 7187073), (9, 2395691), (17, 1268307), (19, 1134801), (51, 422769), (57, 378267), (153, 140923), (171, 126089), (323, 66753), (969, 22251), (2907, 7417)]