21951675

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1913}}^1$

素因数の和:1949

約数の個数: 48

約数和(自身を含む): 42720480

約数和(自身を除く): 20768805

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 1913, 2295, 3825, 5739, 9565, 11475, 17217, 28695, 32521, 47825, 51651, 86085, 97563, 143475, 162605, 258255, 292689, 430425, 487815, 813025, 878067, 1291275, 1463445, 2439075, 4390335, 7317225, 21951675]

約数ペア:

[(1, 21951675), (3, 7317225), (5, 4390335), (9, 2439075), (15, 1463445), (17, 1291275), (25, 878067), (27, 813025), (45, 487815), (51, 430425), (75, 292689), (85, 258255), (135, 162605), (153, 143475), (225, 97563), (255, 86085), (425, 51651), (459, 47825), (675, 32521), (765, 28695), (1275, 17217), (1913, 11475), (2295, 9565), (3825, 5739)]