19992925

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 5719715

約数列:

[1, 5, 25, 53, 79, 191, 265, 395, 955, 1325, 1975, 4187, 4775, 10123, 15089, 20935, 50615, 75445, 104675, 253075, 377225, 799717, 3998585, 19992925]

約数ペア:

[(1, 19992925), (5, 3998585), (25, 799717), (53, 377225), (79, 253075), (191, 104675), (265, 75445), (395, 50615), (955, 20935), (1325, 15089), (1975, 10123), (4187, 4775)]