19689872

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28619}}^1$

素因数の和:28670

約数の個数: 20

約数和(自身を含む): 39037680

約数和(自身を除く): 19347808

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28619, 57238, 114476, 228952, 457904, 1230617, 2461234, 4922468, 9844936, 19689872]

約数ペア:

[(1, 19689872), (2, 9844936), (4, 4922468), (8, 2461234), (16, 1230617), (43, 457904), (86, 228952), (172, 114476), (344, 57238), (688, 28619)]