138403840

素因数分解:

$2^{13}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:171

約数の個数: 112

約数和(自身を含む): 346008960

約数和(自身を除く): 207605120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 109, 124, 128, 155, 160, 218, 248, 256, 310, 320, 436, 496, 512, 545, 620, 640, 872, 992, 1024, 1090, 1240, 1280, 1744, 1984, 2048, 2180, 2480, 2560, 3379, 3488, 3968, 4096, 4360, 4960, 5120, 6758, 6976, 7936, 8192, 8720, 9920, 10240, 13516, 13952, 15872, 16895, 17440, 19840, 20480, 27032, 27904, 31744, 33790, 34880, 39680, 40960, 54064, 55808, 63488, 67580, 69760, 79360, 108128, 111616, 126976, 135160, 139520, 158720, 216256, 223232, 253952, 270320, 279040, 317440, 432512, 446464, 540640, 558080, 634880, 865024, 892928, 1081280, 1116160, 1269760, 1730048, 2162560, 2232320, 3460096, 4325120, 4464640, 6920192, 8650240, 13840384, 17300480, 27680768, 34600960, 69201920, 138403840]

約数ペア:

[(1, 138403840), (2, 69201920), (4, 34600960), (5, 27680768), (8, 17300480), (10, 13840384), (16, 8650240), (20, 6920192), (31, 4464640), (32, 4325120), (40, 3460096), (62, 2232320), (64, 2162560), (80, 1730048), (109, 1269760), (124, 1116160), (128, 1081280), (155, 892928), (160, 865024), (218, 634880), (248, 558080), (256, 540640), (310, 446464), (320, 432512), (436, 317440), (496, 279040), (512, 270320), (545, 253952), (620, 223232), (640, 216256), (872, 158720), (992, 139520), (1024, 135160), (1090, 126976), (1240, 111616), (1280, 108128), (1744, 79360), (1984, 69760), (2048, 67580), (2180, 63488), (2480, 55808), (2560, 54064), (3379, 40960), (3488, 39680), (3968, 34880), (4096, 33790), (4360, 31744), (4960, 27904), (5120, 27032), (6758, 20480), (6976, 19840), (7936, 17440), (8192, 16895), (8720, 15872), (9920, 13952), (10240, 13516)]