21010203

素因数分解:

$3^2\times {\mathrm{73}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 31145712

約数和(自身を除く): 10135509

約数列:

[1, 3, 9, 73, 113, 219, 283, 339, 657, 849, 1017, 2547, 8249, 20659, 24747, 31979, 61977, 74241, 95937, 185931, 287811, 2334467, 7003401, 21010203]

約数ペア:

[(1, 21010203), (3, 7003401), (9, 2334467), (73, 287811), (113, 185931), (219, 95937), (283, 74241), (339, 61977), (657, 31979), (849, 24747), (1017, 20659), (2547, 8249)]