21714525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{811}}^1$

素因数の和:851

約数の個数: 72

約数和(自身を含む): 47121984

約数和(自身を除く): 25407459

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 51, 63, 75, 85, 105, 119, 153, 175, 225, 255, 315, 357, 425, 525, 595, 765, 811, 1071, 1275, 1575, 1785, 2433, 2975, 3825, 4055, 5355, 5677, 7299, 8925, 12165, 13787, 17031, 20275, 26775, 28385, 36495, 41361, 51093, 60825, 68935, 85155, 96509, 124083, 141925, 182475, 206805, 255465, 289527, 344675, 425775, 482545, 620415, 868581, 1034025, 1277325, 1447635, 2412725, 3102075, 4342905, 7238175, 21714525]

約数ペア:

[(1, 21714525), (3, 7238175), (5, 4342905), (7, 3102075), (9, 2412725), (15, 1447635), (17, 1277325), (21, 1034025), (25, 868581), (35, 620415), (45, 482545), (51, 425775), (63, 344675), (75, 289527), (85, 255465), (105, 206805), (119, 182475), (153, 141925), (175, 124083), (225, 96509), (255, 85155), (315, 68935), (357, 60825), (425, 51093), (525, 41361), (595, 36495), (765, 28385), (811, 26775), (1071, 20275), (1275, 17031), (1575, 13787), (1785, 12165), (2433, 8925), (2975, 7299), (3825, 5677), (4055, 5355)]