21711904

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:593

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 23527136

約数列:

[1, 2, 4, 8, 16, 31, 32, 43, 62, 86, 124, 172, 248, 344, 496, 509, 688, 992, 1018, 1333, 1376, 2036, 2666, 4072, 5332, 8144, 10664, 15779, 16288, 21328, 21887, 31558, 42656, 43774, 63116, 87548, 126232, 175096, 252464, 350192, 504928, 678497, 700384, 1356994, 2713988, 5427976, 10855952, 21711904]

約数ペア:

[(1, 21711904), (2, 10855952), (4, 5427976), (8, 2713988), (16, 1356994), (31, 700384), (32, 678497), (43, 504928), (62, 350192), (86, 252464), (124, 175096), (172, 126232), (248, 87548), (344, 63116), (496, 43774), (509, 42656), (688, 31558), (992, 21887), (1018, 21328), (1333, 16288), (1376, 15779), (2036, 10664), (2666, 8144), (4072, 5332)]