80385320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:402

約数の個数: 64

約数和(自身を含む): 185328000

約数和(自身を除く): 104942680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 109, 179, 206, 218, 358, 412, 436, 515, 545, 716, 824, 872, 895, 1030, 1090, 1432, 1790, 2060, 2180, 3580, 4120, 4360, 7160, 11227, 18437, 19511, 22454, 36874, 39022, 44908, 56135, 73748, 78044, 89816, 92185, 97555, 112270, 147496, 156088, 184370, 195110, 224540, 368740, 390220, 449080, 737480, 780440, 2009633, 4019266, 8038532, 10048165, 16077064, 20096330, 40192660, 80385320]

約数ペア:

[(1, 80385320), (2, 40192660), (4, 20096330), (5, 16077064), (8, 10048165), (10, 8038532), (20, 4019266), (40, 2009633), (103, 780440), (109, 737480), (179, 449080), (206, 390220), (218, 368740), (358, 224540), (412, 195110), (436, 184370), (515, 156088), (545, 147496), (716, 112270), (824, 97555), (872, 92185), (895, 89816), (1030, 78044), (1090, 73748), (1432, 56135), (1790, 44908), (2060, 39022), (2180, 36874), (3580, 22454), (4120, 19511), (4360, 18437), (7160, 11227)]