20615984

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:477

約数の個数: 40

約数和(自身を含む): 41730960

約数和(自身を除く): 21114976

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 157, 232, 283, 314, 464, 566, 628, 1132, 1256, 2264, 2512, 4528, 4553, 8207, 9106, 16414, 18212, 32828, 36424, 44431, 65656, 72848, 88862, 131312, 177724, 355448, 710896, 1288499, 2576998, 5153996, 10307992, 20615984]

約数ペア:

[(1, 20615984), (2, 10307992), (4, 5153996), (8, 2576998), (16, 1288499), (29, 710896), (58, 355448), (116, 177724), (157, 131312), (232, 88862), (283, 72848), (314, 65656), (464, 44431), (566, 36424), (628, 32828), (1132, 18212), (1256, 16414), (2264, 9106), (2512, 8207), (4528, 4553)]