28106871

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{457}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 43088640

約数和(自身を除く): 14981769

約数列:

[1, 3, 13, 19, 39, 57, 83, 247, 249, 457, 741, 1079, 1371, 1577, 3237, 4731, 5941, 8683, 17823, 20501, 26049, 37931, 61503, 112879, 113793, 338637, 493103, 720689, 1479309, 2162067, 9368957, 28106871]

約数ペア:

[(1, 28106871), (3, 9368957), (13, 2162067), (19, 1479309), (39, 720689), (57, 493103), (83, 338637), (247, 113793), (249, 112879), (457, 61503), (741, 37931), (1079, 26049), (1371, 20501), (1577, 17823), (3237, 8683), (4731, 5941)]