181561275

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6781}}^1$

素因数の和:6821

約数の個数: 72

約数和(自身を含む): 393573024

約数和(自身を除く): 212011749

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, 1071, 1275, 1575, 1785, 2975, 3825, 5355, 6781, 8925, 20343, 26775, 33905, 47467, 61029, 101715, 115277, 142401, 169525, 237335, 305145, 345831, 427203, 508575, 576385, 712005, 806939, 1037493, 1186675, 1525725, 1729155, 2136015, 2420817, 2881925, 3560025, 4034695, 5187465, 7262451, 8645775, 10680075, 12104085, 20173475, 25937325, 36312255, 60520425, 181561275]

約数ペア:

[(1, 181561275), (3, 60520425), (5, 36312255), (7, 25937325), (9, 20173475), (15, 12104085), (17, 10680075), (21, 8645775), (25, 7262451), (35, 5187465), (45, 4034695), (51, 3560025), (63, 2881925), (75, 2420817), (85, 2136015), (105, 1729155), (119, 1525725), (153, 1186675), (175, 1037493), (225, 806939), (255, 712005), (315, 576385), (357, 508575), (425, 427203), (525, 345831), (595, 305145), (765, 237335), (1071, 169525), (1275, 142401), (1575, 115277), (1785, 101715), (2975, 61029), (3825, 47467), (5355, 33905), (6781, 26775), (8925, 20343)]