20610380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21031}}^1$

素因数の和:21054

約数の個数: 36

約数和(自身を含む): 50350608

約数和(自身を除く): 29740228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21031, 42062, 84124, 105155, 147217, 210310, 294434, 420620, 588868, 736085, 1030519, 1472170, 2061038, 2944340, 4122076, 5152595, 10305190, 20610380]

約数ペア:

[(1, 20610380), (2, 10305190), (4, 5152595), (5, 4122076), (7, 2944340), (10, 2061038), (14, 1472170), (20, 1030519), (28, 736085), (35, 588868), (49, 420620), (70, 294434), (98, 210310), (140, 147217), (196, 105155), (245, 84124), (490, 42062), (980, 21031)]