640097913

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{769}}^1\times {\mathrm{3049}}^1$

素因数の和:3841

約数の個数: 32

約数和(自身を含む): 1052128000

約数和(自身を除く): 412030087

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 769, 2307, 3049, 5383, 9147, 9997, 16149, 21343, 29991, 39637, 64029, 69979, 118911, 209937, 277459, 832377, 2344681, 7034043, 16412767, 30480853, 49238301, 91442559, 213365971, 640097913]

約数ペア:

[(1, 640097913), (3, 213365971), (7, 91442559), (13, 49238301), (21, 30480853), (39, 16412767), (91, 7034043), (273, 2344681), (769, 832377), (2307, 277459), (3049, 209937), (5383, 118911), (9147, 69979), (9997, 64029), (16149, 39637), (21343, 29991)]