13239855

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 25238304

約数和(自身を除く): 11998449

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 641, 765, 1215, 1377, 1923, 2295, 3205, 4131, 5769, 6885, 9615, 10897, 17307, 20655, 28845, 32691, 51921, 54485, 86535, 98073, 155763, 163455, 259605, 294219, 490365, 778815, 882657, 1471095, 2647971, 4413285, 13239855]

約数ペア:

[(1, 13239855), (3, 4413285), (5, 2647971), (9, 1471095), (15, 882657), (17, 778815), (27, 490365), (45, 294219), (51, 259605), (81, 163455), (85, 155763), (135, 98073), (153, 86535), (243, 54485), (255, 51921), (405, 32691), (459, 28845), (641, 20655), (765, 17307), (1215, 10897), (1377, 9615), (1923, 6885), (2295, 5769), (3205, 4131)]