20854621905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{313}}^1$

素因数の和:651

約数の個数: 128

約数和(自身を含む): 38741068800

約数和(自身を除く): 17886446895

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 101, 195, 199, 221, 255, 303, 313, 505, 597, 663, 939, 995, 1105, 1313, 1515, 1565, 1717, 2587, 2985, 3315, 3383, 3939, 4069, 4695, 5151, 5321, 6565, 7761, 8585, 10149, 12207, 12935, 15963, 16915, 19695, 20099, 20345, 22321, 25755, 26605, 31613, 38805, 43979, 50745, 60297, 61035, 62287, 66963, 69173, 79815, 94839, 100495, 111605, 131937, 158065, 186861, 207519, 219895, 261287, 301485, 311435, 334815, 341683, 345865, 410969, 474195, 537421, 659685, 783861, 809731, 934305, 1025049, 1037595, 1058879, 1232907, 1306435, 1612263, 1708415, 2054845, 2429193, 2687105, 3176637, 3919305, 4048655, 4441879, 5125245, 5294395, 6164535, 6290987, 6986473, 8061315, 12145965, 13325637, 13765427, 15883185, 18872961, 20959419, 22209395, 31454935, 34932365, 41296281, 66628185, 68827135, 81782831, 94364805, 104797095, 106946779, 206481405, 245348493, 320840337, 408914155, 534733895, 1226742465, 1390308127, 1604201685, 4170924381, 6951540635, 20854621905]

約数ペア:

[(1, 20854621905), (3, 6951540635), (5, 4170924381), (13, 1604201685), (15, 1390308127), (17, 1226742465), (39, 534733895), (51, 408914155), (65, 320840337), (85, 245348493), (101, 206481405), (195, 106946779), (199, 104797095), (221, 94364805), (255, 81782831), (303, 68827135), (313, 66628185), (505, 41296281), (597, 34932365), (663, 31454935), (939, 22209395), (995, 20959419), (1105, 18872961), (1313, 15883185), (1515, 13765427), (1565, 13325637), (1717, 12145965), (2587, 8061315), (2985, 6986473), (3315, 6290987), (3383, 6164535), (3939, 5294395), (4069, 5125245), (4695, 4441879), (5151, 4048655), (5321, 3919305), (6565, 3176637), (7761, 2687105), (8585, 2429193), (10149, 2054845), (12207, 1708415), (12935, 1612263), (15963, 1306435), (16915, 1232907), (19695, 1058879), (20099, 1037595), (20345, 1025049), (22321, 934305), (25755, 809731), (26605, 783861), (31613, 659685), (38805, 537421), (43979, 474195), (50745, 410969), (60297, 345865), (61035, 341683), (62287, 334815), (66963, 311435), (69173, 301485), (79815, 261287), (94839, 219895), (100495, 207519), (111605, 186861), (131937, 158065)]