20289325

素因数分解:

$5^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{431}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 8637395

約数列:

[1, 5, 7, 25, 35, 175, 269, 431, 1345, 1883, 2155, 3017, 6725, 9415, 10775, 15085, 47075, 75425, 115939, 579695, 811573, 2898475, 4057865, 20289325]

約数ペア:

[(1, 20289325), (5, 4057865), (7, 2898475), (25, 811573), (35, 579695), (175, 115939), (269, 75425), (431, 47075), (1345, 15085), (1883, 10775), (2155, 9415), (3017, 6725)]