20638728

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 64733760

約数和(自身を除く): 44095032

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 23, 24, 33, 36, 44, 46, 66, 69, 72, 88, 92, 99, 103, 121, 132, 138, 184, 198, 206, 207, 242, 253, 264, 276, 309, 363, 396, 412, 414, 484, 506, 552, 618, 726, 759, 792, 824, 828, 927, 968, 1012, 1089, 1133, 1236, 1452, 1518, 1656, 1854, 2024, 2178, 2266, 2277, 2369, 2472, 2783, 2904, 3036, 3399, 3708, 4356, 4532, 4554, 4738, 5566, 6072, 6798, 7107, 7416, 8349, 8712, 9064, 9108, 9476, 10197, 11132, 12463, 13596, 14214, 16698, 18216, 18952, 20394, 21321, 22264, 24926, 25047, 26059, 27192, 28428, 33396, 37389, 40788, 42642, 49852, 50094, 52118, 56856, 66792, 74778, 78177, 81576, 85284, 99704, 100188, 104236, 112167, 149556, 156354, 170568, 200376, 208472, 224334, 234531, 286649, 299112, 312708, 448668, 469062, 573298, 625416, 859947, 897336, 938124, 1146596, 1719894, 1876248, 2293192, 2579841, 3439788, 5159682, 6879576, 10319364, 20638728]

約数ペア:

[(1, 20638728), (2, 10319364), (3, 6879576), (4, 5159682), (6, 3439788), (8, 2579841), (9, 2293192), (11, 1876248), (12, 1719894), (18, 1146596), (22, 938124), (23, 897336), (24, 859947), (33, 625416), (36, 573298), (44, 469062), (46, 448668), (66, 312708), (69, 299112), (72, 286649), (88, 234531), (92, 224334), (99, 208472), (103, 200376), (121, 170568), (132, 156354), (138, 149556), (184, 112167), (198, 104236), (206, 100188), (207, 99704), (242, 85284), (253, 81576), (264, 78177), (276, 74778), (309, 66792), (363, 56856), (396, 52118), (412, 50094), (414, 49852), (484, 42642), (506, 40788), (552, 37389), (618, 33396), (726, 28428), (759, 27192), (792, 26059), (824, 25047), (828, 24926), (927, 22264), (968, 21321), (1012, 20394), (1089, 18952), (1133, 18216), (1236, 16698), (1452, 14214), (1518, 13596), (1656, 12463), (1854, 11132), (2024, 10197), (2178, 9476), (2266, 9108), (2277, 9064), (2369, 8712), (2472, 8349), (2783, 7416), (2904, 7107), (3036, 6798), (3399, 6072), (3708, 5566), (4356, 4738), (4532, 4554)]