18718720

素因数分解:

$2^{13}\times 5^1\times {\mathrm{457}}^1$

素因数の和:488

約数の個数: 56

約数和(自身を含む): 45020484

約数和(自身を除く): 26301764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 457, 512, 640, 914, 1024, 1280, 1828, 2048, 2285, 2560, 3656, 4096, 4570, 5120, 7312, 8192, 9140, 10240, 14624, 18280, 20480, 29248, 36560, 40960, 58496, 73120, 116992, 146240, 233984, 292480, 467968, 584960, 935936, 1169920, 1871872, 2339840, 3743744, 4679680, 9359360, 18718720]

約数ペア:

[(1, 18718720), (2, 9359360), (4, 4679680), (5, 3743744), (8, 2339840), (10, 1871872), (16, 1169920), (20, 935936), (32, 584960), (40, 467968), (64, 292480), (80, 233984), (128, 146240), (160, 116992), (256, 73120), (320, 58496), (457, 40960), (512, 36560), (640, 29248), (914, 20480), (1024, 18280), (1280, 14624), (1828, 10240), (2048, 9140), (2285, 8192), (2560, 7312), (3656, 5120), (4096, 4570)]