28202769

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^2\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 49526400

約数和(自身を除く): 21323631

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 109, 111, 189, 259, 327, 333, 763, 777, 981, 999, 1369, 2289, 2331, 2943, 4033, 4107, 6867, 6993, 9583, 12099, 12321, 20601, 28231, 28749, 36297, 36963, 84693, 86247, 108891, 149221, 254079, 258741, 447663, 762237, 1044547, 1342989, 3133641, 4028967, 9400923, 28202769]

約数ペア:

[(1, 28202769), (3, 9400923), (7, 4028967), (9, 3133641), (21, 1342989), (27, 1044547), (37, 762237), (63, 447663), (109, 258741), (111, 254079), (189, 149221), (259, 108891), (327, 86247), (333, 84693), (763, 36963), (777, 36297), (981, 28749), (999, 28231), (1369, 20601), (2289, 12321), (2331, 12099), (2943, 9583), (4033, 6993), (4107, 6867)]