21735021

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2543}}^1$

素因数の和:2601

約数の個数: 32

約数和(自身を含む): 37122048

約数和(自身を除く): 15387027

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2543, 2849, 7629, 8547, 17801, 27973, 53403, 83919, 94091, 195811, 282273, 587433, 658637, 1035001, 1975911, 3105003, 7245007, 21735021]

約数ペア:

[(1, 21735021), (3, 7245007), (7, 3105003), (11, 1975911), (21, 1035001), (33, 658637), (37, 587433), (77, 282273), (111, 195811), (231, 94091), (259, 83919), (407, 53403), (777, 27973), (1221, 17801), (2543, 8547), (2849, 7629)]