21777255

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3163}}^1$

素因数の和:3197

約数の個数: 40

約数和(自身を含む): 41347152

約数和(自身を除く): 19569897

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3163, 6885, 9489, 15815, 28467, 47445, 53771, 85401, 142335, 161313, 256203, 268855, 427005, 483939, 806565, 1281015, 1451817, 2419695, 4355451, 7259085, 21777255]

約数ペア:

[(1, 21777255), (3, 7259085), (5, 4355451), (9, 2419695), (15, 1451817), (17, 1281015), (27, 806565), (45, 483939), (51, 427005), (81, 268855), (85, 256203), (135, 161313), (153, 142335), (255, 85401), (405, 53771), (459, 47445), (765, 28467), (1377, 15815), (2295, 9489), (3163, 6885)]