20828248

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 47324160

約数和(自身を除く): 26495912

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 103, 157, 161, 184, 206, 314, 322, 412, 628, 644, 721, 824, 1099, 1256, 1288, 1442, 2198, 2369, 2884, 3611, 4396, 4738, 5768, 7222, 8792, 9476, 14444, 16171, 16583, 18952, 25277, 28888, 32342, 33166, 50554, 64684, 66332, 101108, 113197, 129368, 132664, 202216, 226394, 371933, 452788, 743866, 905576, 1487732, 2603531, 2975464, 5207062, 10414124, 20828248]

約数ペア:

[(1, 20828248), (2, 10414124), (4, 5207062), (7, 2975464), (8, 2603531), (14, 1487732), (23, 905576), (28, 743866), (46, 452788), (56, 371933), (92, 226394), (103, 202216), (157, 132664), (161, 129368), (184, 113197), (206, 101108), (314, 66332), (322, 64684), (412, 50554), (628, 33166), (644, 32342), (721, 28888), (824, 25277), (1099, 18952), (1256, 16583), (1288, 16171), (1442, 14444), (2198, 9476), (2369, 8792), (2884, 7222), (3611, 5768), (4396, 4738)]