16646721

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 28804608

約数和(自身を除く): 12157887

約数列:

[1, 3, 7, 13, 21, 31, 39, 49, 91, 93, 147, 217, 273, 281, 403, 637, 651, 843, 1209, 1519, 1911, 1967, 2821, 3653, 4557, 5901, 8463, 8711, 10959, 13769, 19747, 25571, 26133, 41307, 59241, 60977, 76713, 113243, 178997, 182931, 339729, 426839, 536991, 792701, 1280517, 2378103, 5548907, 16646721]

約数ペア:

[(1, 16646721), (3, 5548907), (7, 2378103), (13, 1280517), (21, 792701), (31, 536991), (39, 426839), (49, 339729), (91, 182931), (93, 178997), (147, 113243), (217, 76713), (273, 60977), (281, 59241), (403, 41307), (637, 26133), (651, 25571), (843, 19747), (1209, 13769), (1519, 10959), (1911, 8711), (1967, 8463), (2821, 5901), (3653, 4557)]