19722208

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1303}}^1$

素因数の和:1367

約数の個数: 48

約数和(自身を含む): 43376256

約数和(自身を除く): 23654048

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 86, 88, 172, 176, 344, 352, 473, 688, 946, 1303, 1376, 1892, 2606, 3784, 5212, 7568, 10424, 14333, 15136, 20848, 28666, 41696, 56029, 57332, 112058, 114664, 224116, 229328, 448232, 458656, 616319, 896464, 1232638, 1792928, 2465276, 4930552, 9861104, 19722208]

約数ペア:

[(1, 19722208), (2, 9861104), (4, 4930552), (8, 2465276), (11, 1792928), (16, 1232638), (22, 896464), (32, 616319), (43, 458656), (44, 448232), (86, 229328), (88, 224116), (172, 114664), (176, 112058), (344, 57332), (352, 56029), (473, 41696), (688, 28666), (946, 20848), (1303, 15136), (1376, 14333), (1892, 10424), (2606, 7568), (3784, 5212)]