19898408

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{431}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 18981592

約数列:

[1, 2, 4, 8, 29, 58, 116, 199, 232, 398, 431, 796, 862, 1592, 1724, 3448, 5771, 11542, 12499, 23084, 24998, 46168, 49996, 85769, 99992, 171538, 343076, 686152, 2487301, 4974602, 9949204, 19898408]

約数ペア:

[(1, 19898408), (2, 9949204), (4, 4974602), (8, 2487301), (29, 686152), (58, 343076), (116, 171538), (199, 99992), (232, 85769), (398, 49996), (431, 46168), (796, 24998), (862, 23084), (1592, 12499), (1724, 11542), (3448, 5771)]