21960393

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{313}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 36293376

約数和(自身を除く): 14332983

約数列:

[1, 3, 7, 13, 21, 39, 91, 257, 273, 313, 771, 939, 1799, 2191, 3341, 4069, 5397, 6573, 10023, 12207, 23387, 28483, 70161, 80441, 85449, 241323, 563087, 1045733, 1689261, 3137199, 7320131, 21960393]

約数ペア:

[(1, 21960393), (3, 7320131), (7, 3137199), (13, 1689261), (21, 1045733), (39, 563087), (91, 241323), (257, 85449), (273, 80441), (313, 70161), (771, 28483), (939, 23387), (1799, 12207), (2191, 10023), (3341, 6573), (4069, 5397)]