13257560

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{769}}^1$

素因数の和:1211

約数の個数: 32

約数和(自身を含む): 29937600

約数和(自身を除く): 16680040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 769, 862, 1538, 1724, 2155, 3076, 3448, 3845, 4310, 6152, 7690, 8620, 15380, 17240, 30760, 331439, 662878, 1325756, 1657195, 2651512, 3314390, 6628780, 13257560]

約数ペア:

[(1, 13257560), (2, 6628780), (4, 3314390), (5, 2651512), (8, 1657195), (10, 1325756), (20, 662878), (40, 331439), (431, 30760), (769, 17240), (862, 15380), (1538, 8620), (1724, 7690), (2155, 6152), (3076, 4310), (3448, 3845)]