9900891

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 72

約数和(自身を含む): 19669104

約数和(自身を除く): 9768213

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 49, 63, 77, 91, 99, 117, 143, 147, 157, 231, 273, 429, 441, 471, 539, 637, 693, 819, 1001, 1099, 1287, 1413, 1617, 1727, 1911, 2041, 3003, 3297, 4851, 5181, 5733, 6123, 7007, 7693, 9009, 9891, 12089, 14287, 15543, 18369, 21021, 22451, 23079, 36267, 42861, 63063, 67353, 69237, 84623, 100009, 108801, 128583, 157157, 202059, 253869, 300027, 471471, 761607, 900081, 1100099, 1414413, 3300297, 9900891]

約数ペア:

[(1, 9900891), (3, 3300297), (7, 1414413), (9, 1100099), (11, 900081), (13, 761607), (21, 471471), (33, 300027), (39, 253869), (49, 202059), (63, 157157), (77, 128583), (91, 108801), (99, 100009), (117, 84623), (143, 69237), (147, 67353), (157, 63063), (231, 42861), (273, 36267), (429, 23079), (441, 22451), (471, 21021), (539, 18369), (637, 15543), (693, 14287), (819, 12089), (1001, 9891), (1099, 9009), (1287, 7693), (1413, 7007), (1617, 6123), (1727, 5733), (1911, 5181), (2041, 4851), (3003, 3297)]