19929760

素因数分解:

$2^5\times 5^1\times {\mathrm{124561}}^1$

素因数の和:124576

約数の個数: 24

約数和(自身を含む): 47084436

約数和(自身を除く): 27154676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124561, 249122, 498244, 622805, 996488, 1245610, 1992976, 2491220, 3985952, 4982440, 9964880, 19929760]

約数ペア:

[(1, 19929760), (2, 9964880), (4, 4982440), (5, 3985952), (8, 2491220), (10, 1992976), (16, 1245610), (20, 996488), (32, 622805), (40, 498244), (80, 249122), (160, 124561)]