640883583

素因数分解:

$3^6\times {\mathrm{461}}^1\times {\mathrm{1907}}^1$

素因数の和:2386

約数の個数: 28

約数和(自身を含む): 963475128

約数和(自身を除く): 322591545

約数列:

[1, 3, 9, 27, 81, 243, 461, 729, 1383, 1907, 4149, 5721, 12447, 17163, 37341, 51489, 112023, 154467, 336069, 463401, 879127, 1390203, 2637381, 7912143, 23736429, 71209287, 213627861, 640883583]

約数ペア:

[(1, 640883583), (3, 213627861), (9, 71209287), (27, 23736429), (81, 7912143), (243, 2637381), (461, 1390203), (729, 879127), (1383, 463401), (1907, 336069), (4149, 154467), (5721, 112023), (12447, 51489), (17163, 37341)]