21281673

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19121}}^1$

素因数の和:19184

約数の個数: 16

約数和(自身を含む): 33042816

約数和(自身を除く): 11761143

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19121, 57363, 133847, 401541, 1013413, 3040239, 7093891, 21281673]

約数ペア:

[(1, 21281673), (3, 7093891), (7, 3040239), (21, 1013413), (53, 401541), (159, 133847), (371, 57363), (1113, 19121)]