12983971

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 18960480

約数和(自身を除く): 5976509

約数列:

[1, 7, 11, 13, 17, 49, 77, 91, 109, 119, 143, 187, 221, 539, 637, 763, 833, 1001, 1199, 1309, 1417, 1547, 1853, 2431, 5341, 7007, 8393, 9163, 9919, 10829, 12971, 15587, 17017, 20383, 24089, 58751, 69433, 90797, 109109, 119119, 142681, 168623, 264979, 763763, 998767, 1180361, 1854853, 12983971]

約数ペア:

[(1, 12983971), (7, 1854853), (11, 1180361), (13, 998767), (17, 763763), (49, 264979), (77, 168623), (91, 142681), (109, 119119), (119, 109109), (143, 90797), (187, 69433), (221, 58751), (539, 24089), (637, 20383), (763, 17017), (833, 15587), (1001, 12971), (1199, 10829), (1309, 9919), (1417, 9163), (1547, 8393), (1853, 7007), (2431, 5341)]