138668425

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25561}}^1$

素因数の和:25609

約数の個数: 24

約数和(自身を含む): 202860032

約数和(自身を除く): 64191607

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 5425, 25561, 127805, 178927, 639025, 792391, 894635, 3961955, 4473175, 5546737, 19809775, 27733685, 138668425]

約数ペア:

[(1, 138668425), (5, 27733685), (7, 19809775), (25, 5546737), (31, 4473175), (35, 3961955), (155, 894635), (175, 792391), (217, 639025), (775, 178927), (1085, 127805), (5425, 25561)]