21329920

素因数分解:

$2^{11}\times 5^1\times {\mathrm{2083}}^1$

素因数の和:2110

約数の個数: 48

約数和(自身を含む): 51203880

約数和(自身を除く): 29873960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2083, 2560, 4166, 5120, 8332, 10240, 10415, 16664, 20830, 33328, 41660, 66656, 83320, 133312, 166640, 266624, 333280, 533248, 666560, 1066496, 1333120, 2132992, 2666240, 4265984, 5332480, 10664960, 21329920]

約数ペア:

[(1, 21329920), (2, 10664960), (4, 5332480), (5, 4265984), (8, 2666240), (10, 2132992), (16, 1333120), (20, 1066496), (32, 666560), (40, 533248), (64, 333280), (80, 266624), (128, 166640), (160, 133312), (256, 83320), (320, 66656), (512, 41660), (640, 33328), (1024, 20830), (1280, 16664), (2048, 10415), (2083, 10240), (2560, 8332), (4166, 5120)]