21256359

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 29980656

約数和(自身を除く): 8724297

約数列:

[1, 3, 31, 73, 93, 101, 219, 303, 961, 2263, 2883, 3131, 6789, 7373, 9393, 22119, 70153, 97061, 210459, 228563, 291183, 685689, 7085453, 21256359]

約数ペア:

[(1, 21256359), (3, 7085453), (31, 685689), (73, 291183), (93, 228563), (101, 210459), (219, 97061), (303, 70153), (961, 22119), (2263, 9393), (2883, 7373), (3131, 6789)]