28404411

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 45903360

約数和(自身を除く): 17498949

約数列:

[1, 3, 7, 19, 21, 57, 133, 257, 277, 399, 771, 831, 1799, 1939, 4883, 5263, 5397, 5817, 14649, 15789, 34181, 36841, 71189, 102543, 110523, 213567, 498323, 1352591, 1494969, 4057773, 9468137, 28404411]

約数ペア:

[(1, 28404411), (3, 9468137), (7, 4057773), (19, 1494969), (21, 1352591), (57, 498323), (133, 213567), (257, 110523), (277, 102543), (399, 71189), (771, 36841), (831, 34181), (1799, 15789), (1939, 14649), (4883, 5817), (5263, 5397)]