21775888

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1021}}^1$

素因数の和:1103

約数の個数: 40

約数和(自身を含む): 44608256

約数和(自身を除く): 22832368

約数列:

[1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 1021, 1333, 2042, 2666, 4084, 5332, 8168, 10664, 16336, 21328, 31651, 43903, 63302, 87806, 126604, 175612, 253208, 351224, 506416, 702448, 1360993, 2721986, 5443972, 10887944, 21775888]

約数ペア:

[(1, 21775888), (2, 10887944), (4, 5443972), (8, 2721986), (16, 1360993), (31, 702448), (43, 506416), (62, 351224), (86, 253208), (124, 175612), (172, 126604), (248, 87806), (344, 63302), (496, 43903), (688, 31651), (1021, 21328), (1333, 16336), (2042, 10664), (2666, 8168), (4084, 5332)]