13721805

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1993}}^1$

素因数の和:2027

約数の個数: 40

約数和(自身を含む): 26057592

約数和(自身を除く): 12335787

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 1993, 2295, 5979, 6885, 9965, 17937, 29895, 33881, 53811, 89685, 101643, 161433, 169405, 269055, 304929, 508215, 807165, 914787, 1524645, 2744361, 4573935, 13721805]

約数ペア:

[(1, 13721805), (3, 4573935), (5, 2744361), (9, 1524645), (15, 914787), (17, 807165), (27, 508215), (45, 304929), (51, 269055), (81, 169405), (85, 161433), (135, 101643), (153, 89685), (255, 53811), (405, 33881), (459, 29895), (765, 17937), (1377, 9965), (1993, 6885), (2295, 5979)]