20406989421

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2768551}}^1$

素因数の和:2768583

約数の個数: 40

約数和(自身を含む): 37519416704

約数和(自身を除く): 17112427283

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 7371, 2768551, 8305653, 19379857, 24916959, 35991163, 58139571, 74750877, 107973489, 174418713, 224252631, 251938141, 323920467, 523256139, 755814423, 971761401, 1569768417, 2267443269, 2915284203, 6802329807, 20406989421]

約数ペア:

[(1, 20406989421), (3, 6802329807), (7, 2915284203), (9, 2267443269), (13, 1569768417), (21, 971761401), (27, 755814423), (39, 523256139), (63, 323920467), (81, 251938141), (91, 224252631), (117, 174418713), (189, 107973489), (273, 74750877), (351, 58139571), (567, 35991163), (819, 24916959), (1053, 19379857), (2457, 8305653), (7371, 2768551)]