21246345

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27773}}^1$

素因数の和:27801

約数の個数: 24

約数和(自身を含む): 38994696

約数和(自身を除く): 17748351

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27773, 83319, 138865, 249957, 416595, 472141, 1249785, 1416423, 2360705, 4249269, 7082115, 21246345]

約数ペア:

[(1, 21246345), (3, 7082115), (5, 4249269), (9, 2360705), (15, 1416423), (17, 1249785), (45, 472141), (51, 416595), (85, 249957), (153, 138865), (255, 83319), (765, 27773)]