20188791

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2887}}^1$

素因数の和:2940

約数の個数: 32

約数和(自身を含む): 35118080

約数和(自身を除く): 14929289

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 2887, 6993, 8661, 20209, 25983, 60627, 77949, 106819, 181881, 320457, 545643, 747733, 961371, 2243199, 2884113, 6729597, 20188791]

約数ペア:

[(1, 20188791), (3, 6729597), (7, 2884113), (9, 2243199), (21, 961371), (27, 747733), (37, 545643), (63, 320457), (111, 181881), (189, 106819), (259, 77949), (333, 60627), (777, 25983), (999, 20209), (2331, 8661), (2887, 6993)]