21637120

素因数分解:

$2^{11}\times 5^1\times {\mathrm{2113}}^1$

素因数の和:2140

約数の個数: 48

約数和(自身を含む): 51940980

約数和(自身を除く): 30303860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2113, 2560, 4226, 5120, 8452, 10240, 10565, 16904, 21130, 33808, 42260, 67616, 84520, 135232, 169040, 270464, 338080, 540928, 676160, 1081856, 1352320, 2163712, 2704640, 4327424, 5409280, 10818560, 21637120]

約数ペア:

[(1, 21637120), (2, 10818560), (4, 5409280), (5, 4327424), (8, 2704640), (10, 2163712), (16, 1352320), (20, 1081856), (32, 676160), (40, 540928), (64, 338080), (80, 270464), (128, 169040), (160, 135232), (256, 84520), (320, 67616), (512, 42260), (640, 33808), (1024, 21130), (1280, 16904), (2048, 10565), (2113, 10240), (2560, 8452), (4226, 5120)]