205457960

素因数分解:

$2^3\times 5^1\times {\mathrm{5136449}}^1$

素因数の和:5136460

約数の個数: 16

約数和(自身を含む): 462280500

約数和(自身を除く): 256822540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5136449, 10272898, 20545796, 25682245, 41091592, 51364490, 102728980, 205457960]

約数ペア:

[(1, 205457960), (2, 102728980), (4, 51364490), (5, 41091592), (8, 25682245), (10, 20545796), (20, 10272898), (40, 5136449)]