40001920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{8929}}^1$

素因数の和:8955

約数の個数: 64

約数和(自身を含む): 109303200

約数和(自身を除く): 69301280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 8929, 17858, 35716, 44645, 62503, 71432, 89290, 125006, 142864, 178580, 250012, 285728, 312515, 357160, 500024, 571456, 625030, 714320, 1000048, 1142912, 1250060, 1428640, 2000096, 2500120, 2857280, 4000192, 5000240, 5714560, 8000384, 10000480, 20000960, 40001920]

約数ペア:

[(1, 40001920), (2, 20000960), (4, 10000480), (5, 8000384), (7, 5714560), (8, 5000240), (10, 4000192), (14, 2857280), (16, 2500120), (20, 2000096), (28, 1428640), (32, 1250060), (35, 1142912), (40, 1000048), (56, 714320), (64, 625030), (70, 571456), (80, 500024), (112, 357160), (128, 312515), (140, 285728), (160, 250012), (224, 178580), (280, 142864), (320, 125006), (448, 89290), (560, 71432), (640, 62503), (896, 44645), (1120, 35716), (2240, 17858), (4480, 8929)]