199909857

素因数分解:

$3^1\times 7^2\times {\mathrm{953}}^1\times {\mathrm{1427}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 310607136

約数和(自身を除く): 110697279

約数列:

[1, 3, 7, 21, 49, 147, 953, 1427, 2859, 4281, 6671, 9989, 20013, 29967, 46697, 69923, 140091, 209769, 1359931, 4079793, 9519517, 28558551, 66636619, 199909857]

約数ペア:

[(1, 199909857), (3, 66636619), (7, 28558551), (21, 9519517), (49, 4079793), (147, 1359931), (953, 209769), (1427, 140091), (2859, 69923), (4281, 46697), (6671, 29967), (9989, 20013)]