8729721

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:76

約数の個数: 128

約数和(自身を含む): 19353600

約数和(自身を除く): 10623879

約数列:

[1, 3, 7, 9, 11, 13, 17, 19, 21, 27, 33, 39, 51, 57, 63, 77, 91, 99, 117, 119, 133, 143, 153, 171, 187, 189, 209, 221, 231, 247, 273, 297, 323, 351, 357, 399, 429, 459, 513, 561, 627, 663, 693, 741, 819, 969, 1001, 1071, 1197, 1287, 1309, 1463, 1547, 1683, 1729, 1881, 1989, 2079, 2223, 2261, 2431, 2457, 2717, 2907, 3003, 3213, 3553, 3591, 3861, 3927, 4199, 4389, 4641, 5049, 5187, 5643, 5967, 6669, 6783, 7293, 8151, 8721, 9009, 10659, 11781, 12597, 13167, 13923, 15561, 17017, 19019, 20349, 21879, 24453, 24871, 27027, 29393, 31977, 35343, 37791, 39501, 41769, 46189, 46683, 51051, 57057, 61047, 65637, 73359, 74613, 88179, 95931, 113373, 138567, 153153, 171171, 223839, 264537, 323323, 415701, 459459, 513513, 671517, 793611, 969969, 1247103, 2909907, 8729721]

約数ペア:

[(1, 8729721), (3, 2909907), (7, 1247103), (9, 969969), (11, 793611), (13, 671517), (17, 513513), (19, 459459), (21, 415701), (27, 323323), (33, 264537), (39, 223839), (51, 171171), (57, 153153), (63, 138567), (77, 113373), (91, 95931), (99, 88179), (117, 74613), (119, 73359), (133, 65637), (143, 61047), (153, 57057), (171, 51051), (187, 46683), (189, 46189), (209, 41769), (221, 39501), (231, 37791), (247, 35343), (273, 31977), (297, 29393), (323, 27027), (351, 24871), (357, 24453), (399, 21879), (429, 20349), (459, 19019), (513, 17017), (561, 15561), (627, 13923), (663, 13167), (693, 12597), (741, 11781), (819, 10659), (969, 9009), (1001, 8721), (1071, 8151), (1197, 7293), (1287, 6783), (1309, 6669), (1463, 5967), (1547, 5643), (1683, 5187), (1729, 5049), (1881, 4641), (1989, 4389), (2079, 4199), (2223, 3927), (2261, 3861), (2431, 3591), (2457, 3553), (2717, 3213), (2907, 3003)]