21215541

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{11243}}^1$

素因数の和:11300

約数の個数: 16

約数和(自身を含む): 30763584

約数和(自身を除く): 9548043

約数列:

[1, 3, 17, 37, 51, 111, 629, 1887, 11243, 33729, 191131, 415991, 573393, 1247973, 7071847, 21215541]

約数ペア:

[(1, 21215541), (3, 7071847), (17, 1247973), (37, 573393), (51, 415991), (111, 191131), (629, 33729), (1887, 11243)]