20729956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 40843264

約数和(自身を除く): 20113308

約数列:

[1, 2, 4, 13, 26, 43, 52, 73, 86, 127, 146, 172, 254, 292, 508, 559, 949, 1118, 1651, 1898, 2236, 3139, 3302, 3796, 5461, 6278, 6604, 9271, 10922, 12556, 18542, 21844, 37084, 40807, 70993, 81614, 120523, 141986, 163228, 241046, 283972, 398653, 482092, 797306, 1594612, 5182489, 10364978, 20729956]

約数ペア:

[(1, 20729956), (2, 10364978), (4, 5182489), (13, 1594612), (26, 797306), (43, 482092), (52, 398653), (73, 283972), (86, 241046), (127, 163228), (146, 141986), (172, 120523), (254, 81614), (292, 70993), (508, 40807), (559, 37084), (949, 21844), (1118, 18542), (1651, 12556), (1898, 10922), (2236, 9271), (3139, 6604), (3302, 6278), (3796, 5461)]