251456128

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:886

約数の個数: 128

約数和(自身を含む): 645488640

約数和(自身を除く): 394032512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 32, 44, 56, 62, 64, 77, 88, 112, 124, 128, 154, 176, 217, 224, 248, 308, 341, 352, 434, 448, 496, 616, 682, 704, 823, 868, 896, 992, 1232, 1364, 1408, 1646, 1736, 1984, 2387, 2464, 2728, 3292, 3472, 3968, 4774, 4928, 5456, 5761, 6584, 6944, 9053, 9548, 9856, 10912, 11522, 13168, 13888, 18106, 19096, 21824, 23044, 25513, 26336, 27776, 36212, 38192, 43648, 46088, 51026, 52672, 63371, 72424, 76384, 92176, 102052, 105344, 126742, 144848, 152768, 178591, 184352, 204104, 253484, 280643, 289696, 305536, 357182, 368704, 408208, 506968, 561286, 579392, 714364, 737408, 816416, 1013936, 1122572, 1158784, 1428728, 1632832, 1964501, 2027872, 2245144, 2857456, 3265664, 3929002, 4055744, 4490288, 5714912, 7858004, 8111488, 8980576, 11429824, 15716008, 17961152, 22859648, 31432016, 35922304, 62864032, 125728064, 251456128]

約数ペア:

[(1, 251456128), (2, 125728064), (4, 62864032), (7, 35922304), (8, 31432016), (11, 22859648), (14, 17961152), (16, 15716008), (22, 11429824), (28, 8980576), (31, 8111488), (32, 7858004), (44, 5714912), (56, 4490288), (62, 4055744), (64, 3929002), (77, 3265664), (88, 2857456), (112, 2245144), (124, 2027872), (128, 1964501), (154, 1632832), (176, 1428728), (217, 1158784), (224, 1122572), (248, 1013936), (308, 816416), (341, 737408), (352, 714364), (434, 579392), (448, 561286), (496, 506968), (616, 408208), (682, 368704), (704, 357182), (823, 305536), (868, 289696), (896, 280643), (992, 253484), (1232, 204104), (1364, 184352), (1408, 178591), (1646, 152768), (1736, 144848), (1984, 126742), (2387, 105344), (2464, 102052), (2728, 92176), (3292, 76384), (3472, 72424), (3968, 63371), (4774, 52672), (4928, 51026), (5456, 46088), (5761, 43648), (6584, 38192), (6944, 36212), (9053, 27776), (9548, 26336), (9856, 25513), (10912, 23044), (11522, 21824), (13168, 19096), (13888, 18106)]