400031744

素因数分解:

$2^{19}\times 7^1\times {\mathrm{109}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 922746000

約数和(自身を除く): 522714256

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 109, 112, 128, 218, 224, 256, 436, 448, 512, 763, 872, 896, 1024, 1526, 1744, 1792, 2048, 3052, 3488, 3584, 4096, 6104, 6976, 7168, 8192, 12208, 13952, 14336, 16384, 24416, 27904, 28672, 32768, 48832, 55808, 57344, 65536, 97664, 111616, 114688, 131072, 195328, 223232, 229376, 262144, 390656, 446464, 458752, 524288, 781312, 892928, 917504, 1562624, 1785856, 1835008, 3125248, 3571712, 3670016, 6250496, 7143424, 12500992, 14286848, 25001984, 28573696, 50003968, 57147392, 100007936, 200015872, 400031744]

約数ペア:

[(1, 400031744), (2, 200015872), (4, 100007936), (7, 57147392), (8, 50003968), (14, 28573696), (16, 25001984), (28, 14286848), (32, 12500992), (56, 7143424), (64, 6250496), (109, 3670016), (112, 3571712), (128, 3125248), (218, 1835008), (224, 1785856), (256, 1562624), (436, 917504), (448, 892928), (512, 781312), (763, 524288), (872, 458752), (896, 446464), (1024, 390656), (1526, 262144), (1744, 229376), (1792, 223232), (2048, 195328), (3052, 131072), (3488, 114688), (3584, 111616), (4096, 97664), (6104, 65536), (6976, 57344), (7168, 55808), (8192, 48832), (12208, 32768), (13952, 28672), (14336, 27904), (16384, 24416)]