21671349

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17491}}^1$

素因数の和:17560

約数の個数: 16

約数和(自身を含む): 33584640

約数和(自身を除く): 11913291

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17491, 52473, 122437, 367311, 1031969, 3095907, 7223783, 21671349]

約数ペア:

[(1, 21671349), (3, 7223783), (7, 3095907), (21, 1031969), (59, 367311), (177, 122437), (413, 52473), (1239, 17491)]