19639708

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{2243}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 37699200

約数和(自身を除く): 18059492

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 796, 2189, 2243, 4378, 4486, 8756, 8972, 24673, 49346, 98692, 446357, 892714, 1785428, 4909927, 9819854, 19639708]

約数ペア:

[(1, 19639708), (2, 9819854), (4, 4909927), (11, 1785428), (22, 892714), (44, 446357), (199, 98692), (398, 49346), (796, 24673), (2189, 8972), (2243, 8756), (4378, 4486)]