1640865387

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1905767}}^1$

素因数の和:1905818

約数の個数: 16

約数和(自身を含む): 2561352192

約数和(自身を除く): 920486805

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 1905767, 5717301, 13340369, 40021107, 78136447, 234409341, 546955129, 1640865387]

約数ペア:

[(1, 1640865387), (3, 546955129), (7, 234409341), (21, 78136447), (41, 40021107), (123, 13340369), (287, 5717301), (861, 1905767)]