21077763

素因数分解:

$3^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{2503}}^1$

素因数の和:2914

約数の個数: 16

約数和(自身を含む): 32211456

約数和(自身を除く): 11133693

約数列:

[1, 3, 7, 21, 401, 1203, 2503, 2807, 7509, 8421, 17521, 52563, 1003703, 3011109, 7025921, 21077763]

約数ペア:

[(1, 21077763), (3, 7025921), (7, 3011109), (21, 1003703), (401, 52563), (1203, 17521), (2503, 8421), (2807, 7509)]