21440349

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6673}}^1$

素因数の和:6706

約数の個数: 32

約数和(自身を含む): 38442240

約数和(自身を除く): 17001891

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6673, 20019, 46711, 60057, 113441, 140133, 180171, 340323, 420399, 794087, 1020969, 1261197, 2382261, 3062907, 7146783, 21440349]

約数ペア:

[(1, 21440349), (3, 7146783), (7, 3062907), (9, 2382261), (17, 1261197), (21, 1020969), (27, 794087), (51, 420399), (63, 340323), (119, 180171), (153, 140133), (189, 113441), (357, 60057), (459, 46711), (1071, 20019), (3213, 6673)]