20568639

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1277}}^1$

素因数の和:1359

約数の個数: 32

約数和(自身を含む): 34352640

約数和(自身を除く): 13784001

約数列:

[1, 3, 7, 13, 21, 39, 59, 91, 177, 273, 413, 767, 1239, 1277, 2301, 3831, 5369, 8939, 16107, 16601, 26817, 49803, 75343, 116207, 226029, 348621, 527401, 979459, 1582203, 2938377, 6856213, 20568639]

約数ペア:

[(1, 20568639), (3, 6856213), (7, 2938377), (13, 1582203), (21, 979459), (39, 527401), (59, 348621), (91, 226029), (177, 116207), (273, 75343), (413, 49803), (767, 26817), (1239, 16601), (1277, 16107), (2301, 8939), (3831, 5369)]