19884981

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 28984320

約数和(自身を除く): 9099339

約数列:

[1, 3, 29, 31, 73, 87, 93, 101, 219, 303, 899, 2117, 2263, 2697, 2929, 3131, 6351, 6789, 7373, 8787, 9393, 22119, 65627, 90799, 196881, 213817, 228563, 272397, 641451, 685689, 6628327, 19884981]

約数ペア:

[(1, 19884981), (3, 6628327), (29, 685689), (31, 641451), (73, 272397), (87, 228563), (93, 213817), (101, 196881), (219, 90799), (303, 65627), (899, 22119), (2117, 9393), (2263, 8787), (2697, 7373), (2929, 6789), (3131, 6351)]