19405900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4513}}^1$

素因数の和:4570

約数の個数: 36

約数和(自身を含む): 43099672

約数和(自身を除く): 23693772

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 4513, 9026, 18052, 22565, 45130, 90260, 112825, 194059, 225650, 388118, 451300, 776236, 970295, 1940590, 3881180, 4851475, 9702950, 19405900]

約数ペア:

[(1, 19405900), (2, 9702950), (4, 4851475), (5, 3881180), (10, 1940590), (20, 970295), (25, 776236), (43, 451300), (50, 388118), (86, 225650), (100, 194059), (172, 112825), (215, 90260), (430, 45130), (860, 22565), (1075, 18052), (2150, 9026), (4300, 4513)]