19643428

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 21337820

約数列:

[1, 2, 4, 7, 14, 28, 41, 71, 82, 142, 164, 241, 284, 287, 482, 497, 574, 964, 994, 1148, 1687, 1988, 2911, 3374, 5822, 6748, 9881, 11644, 17111, 19762, 20377, 34222, 39524, 40754, 68444, 69167, 81508, 119777, 138334, 239554, 276668, 479108, 701551, 1403102, 2806204, 4910857, 9821714, 19643428]

約数ペア:

[(1, 19643428), (2, 9821714), (4, 4910857), (7, 2806204), (14, 1403102), (28, 701551), (41, 479108), (71, 276668), (82, 239554), (142, 138334), (164, 119777), (241, 81508), (284, 69167), (287, 68444), (482, 40754), (497, 39524), (574, 34222), (964, 20377), (994, 19762), (1148, 17111), (1687, 11644), (1988, 9881), (2911, 6748), (3374, 5822)]