81917440

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2909}}^1$

素因数の和:2943

約数の個数: 80

約数和(自身を含む): 214338960

約数和(自身を除く): 132421520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 880, 1280, 1408, 1760, 2560, 2816, 2909, 3520, 5632, 5818, 7040, 11636, 14080, 14545, 23272, 28160, 29090, 31999, 46544, 58180, 63998, 93088, 116360, 127996, 159995, 186176, 232720, 255992, 319990, 372352, 465440, 511984, 639980, 744704, 930880, 1023968, 1279960, 1489408, 1861760, 2047936, 2559920, 3723520, 4095872, 5119840, 7447040, 8191744, 10239680, 16383488, 20479360, 40958720, 81917440]

約数ペア:

[(1, 81917440), (2, 40958720), (4, 20479360), (5, 16383488), (8, 10239680), (10, 8191744), (11, 7447040), (16, 5119840), (20, 4095872), (22, 3723520), (32, 2559920), (40, 2047936), (44, 1861760), (55, 1489408), (64, 1279960), (80, 1023968), (88, 930880), (110, 744704), (128, 639980), (160, 511984), (176, 465440), (220, 372352), (256, 319990), (320, 255992), (352, 232720), (440, 186176), (512, 159995), (640, 127996), (704, 116360), (880, 93088), (1280, 63998), (1408, 58180), (1760, 46544), (2560, 31999), (2816, 29090), (2909, 28160), (3520, 23272), (5632, 14545), (5818, 14080), (7040, 11636)]