21155840

素因数分解:

$2^{12}\times 5^1\times {\mathrm{1033}}^1$

素因数の和:1062

約数の個数: 52

約数和(自身を含む): 50816964

約数和(自身を除く): 29661124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1033, 1280, 2048, 2066, 2560, 4096, 4132, 5120, 5165, 8264, 10240, 10330, 16528, 20480, 20660, 33056, 41320, 66112, 82640, 132224, 165280, 264448, 330560, 528896, 661120, 1057792, 1322240, 2115584, 2644480, 4231168, 5288960, 10577920, 21155840]

約数ペア:

[(1, 21155840), (2, 10577920), (4, 5288960), (5, 4231168), (8, 2644480), (10, 2115584), (16, 1322240), (20, 1057792), (32, 661120), (40, 528896), (64, 330560), (80, 264448), (128, 165280), (160, 132224), (256, 82640), (320, 66112), (512, 41320), (640, 33056), (1024, 20660), (1033, 20480), (1280, 16528), (2048, 10330), (2066, 10240), (2560, 8264), (4096, 5165), (4132, 5120)]