21090057

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{16087}}^1$

素因数の和:16132

約数の個数: 16

約数和(自身を含む): 30888960

約数和(自身を除く): 9798903

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 16087, 48261, 305653, 370001, 916959, 1110003, 7030019, 21090057]

約数ペア:

[(1, 21090057), (3, 7030019), (19, 1110003), (23, 916959), (57, 370001), (69, 305653), (437, 48261), (1311, 16087)]