28905745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 11414255

約数列:

[1, 5, 11, 19, 55, 95, 139, 199, 209, 695, 995, 1045, 1529, 2189, 2641, 3781, 7645, 10945, 13205, 18905, 27661, 29051, 41591, 138305, 145255, 207955, 304271, 525559, 1521355, 2627795, 5781149, 28905745]

約数ペア:

[(1, 28905745), (5, 5781149), (11, 2627795), (19, 1521355), (55, 525559), (95, 304271), (139, 207955), (199, 145255), (209, 138305), (695, 41591), (995, 29051), (1045, 27661), (1529, 18905), (2189, 13205), (2641, 10945), (3781, 7645)]