20198403760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{82699}}^1$

素因数の和:82826

約数の個数: 80

約数和(自身を含む): 48730809600

約数和(自身を除く): 28532405840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 71, 80, 86, 142, 172, 215, 284, 344, 355, 430, 568, 688, 710, 860, 1136, 1420, 1720, 2840, 3053, 3440, 5680, 6106, 12212, 15265, 24424, 30530, 48848, 61060, 82699, 122120, 165398, 244240, 330796, 413495, 661592, 826990, 1323184, 1653980, 3307960, 3556057, 5871629, 6615920, 7112114, 11743258, 14224228, 17780285, 23486516, 28448456, 29358145, 35560570, 46973032, 56896912, 58716290, 71121140, 93946064, 117432580, 142242280, 234865160, 252480047, 284484560, 469730320, 504960094, 1009920188, 1262400235, 2019840376, 2524800470, 4039680752, 5049600940, 10099201880, 20198403760]

約数ペア:

[(1, 20198403760), (2, 10099201880), (4, 5049600940), (5, 4039680752), (8, 2524800470), (10, 2019840376), (16, 1262400235), (20, 1009920188), (40, 504960094), (43, 469730320), (71, 284484560), (80, 252480047), (86, 234865160), (142, 142242280), (172, 117432580), (215, 93946064), (284, 71121140), (344, 58716290), (355, 56896912), (430, 46973032), (568, 35560570), (688, 29358145), (710, 28448456), (860, 23486516), (1136, 17780285), (1420, 14224228), (1720, 11743258), (2840, 7112114), (3053, 6615920), (3440, 5871629), (5680, 3556057), (6106, 3307960), (12212, 1653980), (15265, 1323184), (24424, 826990), (30530, 661592), (48848, 413495), (61060, 330796), (82699, 244240), (122120, 165398)]