28259441

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 34893504

約数和(自身を除く): 6634063

約数列:

[1, 7, 19, 53, 133, 211, 361, 371, 1007, 1477, 2527, 4009, 7049, 11183, 19133, 28063, 76171, 78281, 133931, 212477, 533197, 1487339, 4037063, 28259441]

約数ペア:

[(1, 28259441), (7, 4037063), (19, 1487339), (53, 533197), (133, 212477), (211, 133931), (361, 78281), (371, 76171), (1007, 28063), (1477, 19133), (2527, 11183), (4009, 7049)]