28389575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{997}}^1$

素因数の和:1091

約数の個数: 24

約数和(自身を含む): 37868112

約数和(自身を除く): 9478537

約数列:

[1, 5, 17, 25, 67, 85, 335, 425, 997, 1139, 1675, 4985, 5695, 16949, 24925, 28475, 66799, 84745, 333995, 423725, 1135583, 1669975, 5677915, 28389575]

約数ペア:

[(1, 28389575), (5, 5677915), (17, 1669975), (25, 1135583), (67, 423725), (85, 333995), (335, 84745), (425, 66799), (997, 28475), (1139, 24925), (1675, 16949), (4985, 5695)]