1638399

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1279}}^1$

素因数の和:1350

約数の個数: 16

約数和(自身を含む): 2539520

約数和(自身を除く): 901121

約数列:

[1, 3, 7, 21, 61, 183, 427, 1279, 1281, 3837, 8953, 26859, 78019, 234057, 546133, 1638399]

約数ペア:

[(1, 1638399), (3, 546133), (7, 234057), (21, 78019), (61, 26859), (183, 8953), (427, 3837), (1279, 1281)]