21171200

素因数分解:

$2^{10}\times 5^2\times {\mathrm{827}}^1$

素因数の和:857

約数の個数: 66

約数和(自身を含む): 52542396

約数和(自身を除く): 31371196

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 827, 1024, 1280, 1600, 1654, 2560, 3200, 3308, 4135, 5120, 6400, 6616, 8270, 12800, 13232, 16540, 20675, 25600, 26464, 33080, 41350, 52928, 66160, 82700, 105856, 132320, 165400, 211712, 264640, 330800, 423424, 529280, 661600, 846848, 1058560, 1323200, 2117120, 2646400, 4234240, 5292800, 10585600, 21171200]

約数ペア:

[(1, 21171200), (2, 10585600), (4, 5292800), (5, 4234240), (8, 2646400), (10, 2117120), (16, 1323200), (20, 1058560), (25, 846848), (32, 661600), (40, 529280), (50, 423424), (64, 330800), (80, 264640), (100, 211712), (128, 165400), (160, 132320), (200, 105856), (256, 82700), (320, 66160), (400, 52928), (512, 41350), (640, 33080), (800, 26464), (827, 25600), (1024, 20675), (1280, 16540), (1600, 13232), (1654, 12800), (2560, 8270), (3200, 6616), (3308, 6400), (4135, 5120)]