21713920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4241}}^1$

素因数の和:4266

約数の個数: 44

約数和(自身を含む): 52100244

約数和(自身を除く): 30386324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4241, 5120, 8482, 16964, 21205, 33928, 42410, 67856, 84820, 135712, 169640, 271424, 339280, 542848, 678560, 1085696, 1357120, 2171392, 2714240, 4342784, 5428480, 10856960, 21713920]

約数ペア:

[(1, 21713920), (2, 10856960), (4, 5428480), (5, 4342784), (8, 2714240), (10, 2171392), (16, 1357120), (20, 1085696), (32, 678560), (40, 542848), (64, 339280), (80, 271424), (128, 169640), (160, 135712), (256, 84820), (320, 67856), (512, 42410), (640, 33928), (1024, 21205), (1280, 16964), (2560, 8482), (4241, 5120)]