25619890

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{6389}}^1$

素因数の和:6797

約数の個数: 16

約数和(自身を含む): 46238040

約数和(自身を除く): 20618150

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 6389, 12778, 31945, 63890, 2561989, 5123978, 12809945, 25619890]

約数ペア:

[(1, 25619890), (2, 12809945), (5, 5123978), (10, 2561989), (401, 63890), (802, 31945), (2005, 12778), (4010, 6389)]