256438560

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{10903}}^1$

素因数の和:10935

約数の個数: 144

約数和(自身を含む): 939750336

約数和(自身を除く): 683311776

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3920, 4704, 5880, 7840, 10903, 11760, 21806, 23520, 32709, 43612, 54515, 65418, 76321, 87224, 109030, 130836, 152642, 163545, 174448, 218060, 228963, 261672, 305284, 327090, 348896, 381605, 436120, 457926, 523344, 534247, 610568, 654180, 763210, 872240, 915852, 1046688, 1068494, 1144815, 1221136, 1308360, 1526420, 1602741, 1744480, 1831704, 2136988, 2289630, 2442272, 2616720, 2671235, 3052840, 3205482, 3663408, 4273976, 4579260, 5233440, 5342470, 6105680, 6410964, 7326816, 8013705, 8547952, 9158520, 10684940, 12211360, 12821928, 16027410, 17095904, 18317040, 21369880, 25643856, 32054820, 36634080, 42739760, 51287712, 64109640, 85479520, 128219280, 256438560]

約数ペア:

[(1, 256438560), (2, 128219280), (3, 85479520), (4, 64109640), (5, 51287712), (6, 42739760), (7, 36634080), (8, 32054820), (10, 25643856), (12, 21369880), (14, 18317040), (15, 17095904), (16, 16027410), (20, 12821928), (21, 12211360), (24, 10684940), (28, 9158520), (30, 8547952), (32, 8013705), (35, 7326816), (40, 6410964), (42, 6105680), (48, 5342470), (49, 5233440), (56, 4579260), (60, 4273976), (70, 3663408), (80, 3205482), (84, 3052840), (96, 2671235), (98, 2616720), (105, 2442272), (112, 2289630), (120, 2136988), (140, 1831704), (147, 1744480), (160, 1602741), (168, 1526420), (196, 1308360), (210, 1221136), (224, 1144815), (240, 1068494), (245, 1046688), (280, 915852), (294, 872240), (336, 763210), (392, 654180), (420, 610568), (480, 534247), (490, 523344), (560, 457926), (588, 436120), (672, 381605), (735, 348896), (784, 327090), (840, 305284), (980, 261672), (1120, 228963), (1176, 218060), (1470, 174448), (1568, 163545), (1680, 152642), (1960, 130836), (2352, 109030), (2940, 87224), (3360, 76321), (3920, 65418), (4704, 54515), (5880, 43612), (7840, 32709), (10903, 23520), (11760, 21806)]