21125120

素因数分解:

$2^{11}\times 5^1\times {\mathrm{2063}}^1$

素因数の和:2090

約数の個数: 48

約数和(自身を含む): 50712480

約数和(自身を除く): 29587360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2063, 2560, 4126, 5120, 8252, 10240, 10315, 16504, 20630, 33008, 41260, 66016, 82520, 132032, 165040, 264064, 330080, 528128, 660160, 1056256, 1320320, 2112512, 2640640, 4225024, 5281280, 10562560, 21125120]

約数ペア:

[(1, 21125120), (2, 10562560), (4, 5281280), (5, 4225024), (8, 2640640), (10, 2112512), (16, 1320320), (20, 1056256), (32, 660160), (40, 528128), (64, 330080), (80, 264064), (128, 165040), (160, 132032), (256, 82520), (320, 66016), (512, 41260), (640, 33008), (1024, 20630), (1280, 16504), (2048, 10315), (2063, 10240), (2560, 8252), (4126, 5120)]