19928368

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2447}}^1$

素因数の和:2964

約数の個数: 20

約数和(自身を含む): 38702880

約数和(自身を除く): 18774512

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2447, 4072, 4894, 8144, 9788, 19576, 39152, 1245523, 2491046, 4982092, 9964184, 19928368]

約数ペア:

[(1, 19928368), (2, 9964184), (4, 4982092), (8, 2491046), (16, 1245523), (509, 39152), (1018, 19576), (2036, 9788), (2447, 8144), (4072, 4894)]