21387135

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18517}}^1$

素因数の和:18543

約数の個数: 32

約数和(自身を含む): 42665472

約数和(自身を除く): 21278337

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18517, 55551, 92585, 129619, 203687, 277755, 388857, 611061, 648095, 1018435, 1425809, 1944285, 3055305, 4277427, 7129045, 21387135]

約数ペア:

[(1, 21387135), (3, 7129045), (5, 4277427), (7, 3055305), (11, 1944285), (15, 1425809), (21, 1018435), (33, 648095), (35, 611061), (55, 388857), (77, 277755), (105, 203687), (165, 129619), (231, 92585), (385, 55551), (1155, 18517)]