28203399

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 49420800

約数和(自身を除く): 21217401

約数列:

[1, 3, 7, 9, 21, 29, 43, 63, 87, 129, 203, 261, 301, 359, 387, 609, 903, 1077, 1247, 1827, 2513, 2709, 3231, 3741, 7539, 8729, 10411, 11223, 15437, 22617, 26187, 31233, 46311, 72877, 78561, 93699, 108059, 138933, 218631, 324177, 447673, 655893, 972531, 1343019, 3133711, 4029057, 9401133, 28203399]

約数ペア:

[(1, 28203399), (3, 9401133), (7, 4029057), (9, 3133711), (21, 1343019), (29, 972531), (43, 655893), (63, 447673), (87, 324177), (129, 218631), (203, 138933), (261, 108059), (301, 93699), (359, 78561), (387, 72877), (609, 46311), (903, 31233), (1077, 26187), (1247, 22617), (1827, 15437), (2513, 11223), (2709, 10411), (3231, 8729), (3741, 7539)]