81103120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{577}}^1$

素因数の和:848

約数の個数: 80

約数和(自身を含む): 216736128

約数和(自身を除く): 135633008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 251, 280, 502, 560, 577, 1004, 1154, 1255, 1757, 2008, 2308, 2510, 2885, 3514, 4016, 4039, 4616, 5020, 5770, 7028, 8078, 8785, 9232, 10040, 11540, 14056, 16156, 17570, 20080, 20195, 23080, 28112, 32312, 35140, 40390, 46160, 64624, 70280, 80780, 140560, 144827, 161560, 289654, 323120, 579308, 724135, 1013789, 1158616, 1448270, 2027578, 2317232, 2896540, 4055156, 5068945, 5793080, 8110312, 10137890, 11586160, 16220624, 20275780, 40551560, 81103120]

約数ペア:

[(1, 81103120), (2, 40551560), (4, 20275780), (5, 16220624), (7, 11586160), (8, 10137890), (10, 8110312), (14, 5793080), (16, 5068945), (20, 4055156), (28, 2896540), (35, 2317232), (40, 2027578), (56, 1448270), (70, 1158616), (80, 1013789), (112, 724135), (140, 579308), (251, 323120), (280, 289654), (502, 161560), (560, 144827), (577, 140560), (1004, 80780), (1154, 70280), (1255, 64624), (1757, 46160), (2008, 40390), (2308, 35140), (2510, 32312), (2885, 28112), (3514, 23080), (4016, 20195), (4039, 20080), (4616, 17570), (5020, 16156), (5770, 14056), (7028, 11540), (8078, 10040), (8785, 9232)]