21793359

素因数分解:

$3^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1619}}^1$

素因数の和:2270

約数の個数: 16

約数和(自身を含む): 33281280

約数和(自身を除く): 11487921

約数列:

[1, 3, 7, 21, 641, 1619, 1923, 4487, 4857, 11333, 13461, 33999, 1037779, 3113337, 7264453, 21793359]

約数ペア:

[(1, 21793359), (3, 7264453), (7, 3113337), (21, 1037779), (641, 33999), (1619, 13461), (1923, 11333), (4487, 4857)]