21647486

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{1609}}^1$

素因数の和:1680

約数の個数: 24

約数和(自身を含む): 38369520

約数和(自身を除く): 16722034

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 961, 1609, 1922, 3218, 6727, 11263, 13454, 22526, 49879, 99758, 349153, 698306, 1546249, 3092498, 10823743, 21647486]

約数ペア:

[(1, 21647486), (2, 10823743), (7, 3092498), (14, 1546249), (31, 698306), (62, 349153), (217, 99758), (434, 49879), (961, 22526), (1609, 13454), (1922, 11263), (3218, 6727)]